Finding the Fourth Proportional to 710,066.52, 979,899.60 and 387,786.10

Step by Step Solution

1. Step 1: Write the proportion equation
   710,066.52 : 979,899.60 = 387,786.10 : x
2. Step 2: Convert to fraction form
   710,066.52/979,899.60 = 387,786.10/x
3. Step 3: Cross multiply
   710,066.52x = 979,899.60 × 387,786.10
4. Step 4: Simplify right side
   710,066.52x = 379,991,444,275.56
5. Step 5: Solve for x
   x = 379,991,444,275.56/710,066.52
6. Step 6: Final answer
   x = 535,149.08