Finding the Fourth Proportional to 1,018,624.30, 1,405,672.15 and 577,057.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,624.30 : 1,405,672.15 = 577,057.72 : x
2. Step 2: Convert to fraction form
   1,018,624.30/1,405,672.15 = 577,057.72/x
3. Step 3: Cross multiply
   1,018,624.30x = 1,405,672.15 × 577,057.72
4. Step 4: Simplify right side
   1,018,624.30x = 811,153,966,330.27
5. Step 5: Solve for x
   x = 811,153,966,330.27/1,018,624.30
6. Step 6: Final answer
   x = 796,323.01