The weight of 4 math books is 17.832 kilograms.
Given:
weight of math books = 4458 grams
number of math books = 4
1 kg = 1000 grams
4458 grams * 1kg/1000 grams = 4458 kg/1000 = 4.458 kg
4.458 kg * 4 books = 17.832 kg
OR
4458 grams * 4 books = 17832 grams
17832 grams * 1kg/1000 grams = 17832 kg/1000 = 17.832 kg
