Finding the Fourth Proportional to 2,024.72, 3,037.20 and 638.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,024.72 : 3,037.20 = 638.10 : x
2. Step 2: Convert to fraction form
   2,024.72/3,037.20 = 638.10/x
3. Step 3: Cross multiply
   2,024.72x = 3,037.20 × 638.10
4. Step 4: Simplify right side
   2,024.72x = 1,938,037.32
5. Step 5: Solve for x
   x = 1,938,037.32/2,024.72
6. Step 6: Final answer
   x = 957.19