Answer:
43800
Step-by-step explanation:
When rounding or estimating you start with the number farthest to the right and then move to the left. If the number is 5 or higher then the number to the left goes higher. If the number is lower than 5 then the number to the left goes down. For 43762, 2 is lower than 5 so its 43760 and then 6 is higher than 5 so it becomes 43800.
I hope this helps! Please let me know if you need more explanation.