Finding the Fourth Proportional to 714,945.34, 986,631.33 and 392,662

Step by Step Solution

1. Step 1: Write the proportion equation
   714,945.34 : 986,631.33 = 392,662 : x
2. Step 2: Convert to fraction form
   714,945.34/986,631.33 = 392,662/x
3. Step 3: Cross multiply
   714,945.34x = 986,631.33 × 392,662
4. Step 4: Simplify right side
   714,945.34x = 387,412,631,300.46
5. Step 5: Solve for x
   x = 387,412,631,300.46/714,945.34
6. Step 6: Final answer
   x = 541,877.27