Finding the Fourth Proportional to 1,009,727.62, 1,393,401.69 and 557,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,727.62 : 1,393,401.69 = 557,018.50 : x
2. Step 2: Convert to fraction form
   1,009,727.62/1,393,401.69 = 557,018.50/x
3. Step 3: Cross multiply
   1,009,727.62x = 1,393,401.69 × 557,018.50
4. Step 4: Simplify right side
   1,009,727.62x = 776,150,519,261.27
5. Step 5: Solve for x
   x = 776,150,519,261.27/1,009,727.62
6. Step 6: Final answer
   x = 768,673.16