There is nu number before another because the set of numbers is infinitely dense.
If you claim that x1 is the number before 395, then what about x2 = (x1 + 395)/2?
Then x1 < x2 < 395 that is, x2 is before 395 and nearer to it. And then what about x3 = (x2 + 395)/2 and then x4 etc defined similarly?
393
395 is an odd number
393 395 397
234 395
573
395*163/100 = 643.85
2,553rd comes before 2,554th
234 395
395/16 = 2411/16
45
Any negative number comes before pi in the number line.
The number that comes before two is one. The number after two is three.