The answer is in the question: the density is given as g/ml, which tells you that grams divided by millilitres will give you the density. If you have an amount in grams you can use the density to tell you how to find the ml. So it's like a proportion: 1.4832 grams in 1 ml, so how many ml for 218.9 grams? 1.4832/1=218.9/v where v is the volume. Cross-multiply: 1.4832v=218.9, so v=218.9/1.4832=147.59ml.