I have two monitors and my coworker has three. We were wondering if there was a way to set a single background image to stretch across all the monitors.

Right now it's the same image but repeated, so it looks like the same image three times in a row. I would like it to be so that the three images/screens combine to show one image if that makes sense.

If I can't set one image to stretch across the screens like that, is there a way to set a different background for each screen?

Edit: I just wanted to clarify: I am not talking about one image stretching from his monitors to mine, just stretching across our own monitors.