Finding the Fourth Proportional to 705,061, 972,984.18 and 387,109

Step by Step Solution

1. Step 1: Write the proportion equation
   705,061 : 972,984.18 = 387,109 : x
2. Step 2: Convert to fraction form
   705,061/972,984.18 = 387,109/x
3. Step 3: Cross multiply
   705,061x = 972,984.18 × 387,109
4. Step 4: Simplify right side
   705,061x = 376,650,932,935.62
5. Step 5: Solve for x
   x = 376,650,932,935.62/705,061
6. Step 6: Final answer
   x = 534,210.42