Working with point data from Texas and am unfamiliar with what coordinate system it's using. Unfortunately, I am on a work computer which doesn't allow me to do much without admin privileges, so downloading and running Projectionuesser isn't a possibility at this moment.
Below is some examples of the point data:
2127838.753, 13709652.5
2061615.337, 13718121.64
2061615.337, 13718121.64
These points should all be in the San Antonio area of Texas.