Finding the Fourth Proportional to 1,006,592, 1,389,106.68 and 553,892.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,006,592 : 1,389,106.68 = 553,892.72 : x
2. Step 2: Convert to fraction form
   1,006,592/1,389,106.68 = 553,892.72/x
3. Step 3: Cross multiply
   1,006,592x = 1,389,106.68 × 553,892.72
4. Step 4: Simplify right side
   1,006,592x = 769,416,077,355.37
5. Step 5: Solve for x
   x = 769,416,077,355.37/1,006,592
6. Step 6: Final answer
   x = 764,377.30