If you want to run them all together as one I highly suggest not doing this with those monitors. 3 different sized monitors with one curved and two not curved isn't going to work well together. I have three identical monitors on my desk with a mount and it works, but if the monitors were different sizes and shapes then I would think it would be super annoying. Many people don't like the gaps between monitors, they will MASSIVE in this configuration.
If however you want to use the screens as I use them then it's possible. While I have three monitors on my desk, I don't have them working as one. They work as three different screens. This makes it much less likely to be a bother/issue.