Finding the Fourth Proportional to 1,617,061.10, 2,425,598.85 and 418,898.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617,061.10 : 2,425,598.85 = 418,898.30 : x
2. Step 2: Convert to fraction form
   1,617,061.10/2,425,598.85 = 418,898.30/x
3. Step 3: Cross multiply
   1,617,061.10x = 2,425,598.85 × 418,898.30
4. Step 4: Simplify right side
   1,617,061.10x = 1,016,079,234,746.96
5. Step 5: Solve for x
   x = 1,016,079,234,746.96/1,617,061.10
6. Step 6: Final answer
   x = 628,349.32