Finding the Fourth Proportional to 709,781.69, 979,513.59 and 387,505.37

Step by Step Solution

1. Step 1: Write the proportion equation
   709,781.69 : 979,513.59 = 387,505.37 : x
2. Step 2: Convert to fraction form
   709,781.69/979,513.59 = 387,505.37/x
3. Step 3: Cross multiply
   709,781.69x = 979,513.59 × 387,505.37
4. Step 4: Simplify right side
   709,781.69x = 379,566,776,112.98
5. Step 5: Solve for x
   x = 379,566,776,112.98/709,781.69
6. Step 6: Final answer
   x = 534,765.52