How to set up three monitors with a surface pro

It is possible to drive three external monitors from a surface pro.  My surface is currently driving three Dell monitors (two 24" monitors and one 23" monitor).  They are set up as shown below, with all three monitors extending from the surface screen (so I can drag and drop seamlessly). 

As you can see, I have the 23" monitor set up in the middle, which allows my enough space to have the surface screen visible below while having the top still align nicely with the 24" monitors.  I find it useful to have the surface centrally located, so that I can still use swipe gestures if  needed.  The 23" monitor is connected via a DVI to DVI cable which plugs into a small multipurpose adapter that connects to the mini display port on the surface.  The adapter also has input ports for HDMI and display port (so is very handy to have around).  I have another mini display port to VGA adapter for use on the go and these two adapters together allow you to connect to pretty much any monitor or projector you come across.

The other two monitors are both connected to the docking station (Targus USB 3.0 superspeed dual video docking station), which has one DVI input and one HDMI input.

The 24" monitor on the right hand side is connected to my docking station (Targus USB 3.0 superspeed dual video docking station) using a DVI to DVI cable.

The 24" monitor on the left hand side is connected using a DVI to HDMI cable (The DVI end is plugged into the monitor and the HDMI end goes into the back of the docking station).  I had initially tried using the displayport on the monitor with a displayport to HDMI adapter and then a standard HDMI cable but this failed. 

Prior to a three monitor setup I used a two monitor set up with the external monitors side by side and the surface below (in the middle) forming an inverted triangle. This also worked well.

Note if the mouse cursor ever disappears you can hit window+P to bring up the projection options.  Select "PC screen only", then hit window+P again and select "extend".  That should restore your mouse cursor.