Answer:
1724.9
Step-by-step explanation:
If you want to round to tenths place, look at hundredths place.
If the digit in hundredths place is 5 or more than 5 (5,6,7,8,9), then add '1' to the tenth place.
Here, 9 is in hundredths place, so add 1 to 8
1724.9
