Finding the Fourth Proportional to 452,309.32, 681,715.12 and 389,882.89

Step by Step Solution

1. Step 1: Write the proportion equation
   452,309.32 : 681,715.12 = 389,882.89 : x
2. Step 2: Convert to fraction form
   452,309.32/681,715.12 = 389,882.89/x
3. Step 3: Cross multiply
   452,309.32x = 681,715.12 × 389,882.89
4. Step 4: Simplify right side
   452,309.32x = 265,789,061,142.30
5. Step 5: Solve for x
   x = 265,789,061,142.30/452,309.32
6. Step 6: Final answer
   x = 587,626.76