If you have no fire code issues and can run a VGA or DVI cable, then I would suggest buying the appropriate length from https://www.monoprice.com. If you have to go into a rated ceiling and need a plenum rated cable, VGA would be too expensive. Then you could get the baluns suggested by Rob. I use these..... https://muxlab.com/products/ve_vga_balunII.html

They are not that cheap either!