Finding the Fourth Proportional to 707,359.31, 976,156.01 and 385,069.33

Step by Step Solution

1. Step 1: Write the proportion equation
   707,359.31 : 976,156.01 = 385,069.33 : x
2. Step 2: Convert to fraction form
   707,359.31/976,156.01 = 385,069.33/x
3. Step 3: Cross multiply
   707,359.31x = 976,156.01 × 385,069.33
4. Step 4: Simplify right side
   707,359.31x = 375,887,734,911.15
5. Step 5: Solve for x
   x = 375,887,734,911.15/707,359.31
6. Step 6: Final answer
   x = 531,395.75