Finding the Fourth Proportional to 2,124,807.59, 3,187,833.17 and 685,463.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124,807.59 : 3,187,833.17 = 685,463.31 : x
2. Step 2: Convert to fraction form
   2,124,807.59/3,187,833.17 = 685,463.31/x
3. Step 3: Cross multiply
   2,124,807.59x = 3,187,833.17 × 685,463.31
4. Step 4: Simplify right side
   2,124,807.59x = 2,185,142,673,008.68
5. Step 5: Solve for x
   x = 2,185,142,673,008.68/2,124,807.59
6. Step 6: Final answer
   x = 1,028,395.55