This question is a bit vague to me but I will answer it as best as I can:
Answer: 4.18
When looking at decimals, you only focus on the numbers after the “.” Point
Since the numbers are .17 approximately and .19 approximately when rounded to the nearest hundredth
We can safely .18 is in between .17 and .19
Because the integer 18 is between 17 and 19 on the real number spectrum.
Therefore 4.18 is between 4.174 and 4.189