Finding the Fourth Proportional to 1,016,812.89, 1,403,154.72 and 557,916.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016,812.89 : 1,403,154.72 = 557,916.03 : x
2. Step 2: Convert to fraction form
   1,016,812.89/1,403,154.72 = 557,916.03/x
3. Step 3: Cross multiply
   1,016,812.89x = 1,403,154.72 × 557,916.03
4. Step 4: Simplify right side
   1,016,812.89x = 782,842,510,858.16
5. Step 5: Solve for x
   x = 782,842,510,858.16/1,016,812.89
6. Step 6: Final answer
   x = 769,898.30