Finding the Fourth Proportional to 714,475.33, 985,990.59 and 404,377.89

Step by Step Solution

1. Step 1: Write the proportion equation
   714,475.33 : 985,990.59 = 404,377.89 : x
2. Step 2: Convert to fraction form
   714,475.33/985,990.59 = 404,377.89/x
3. Step 3: Cross multiply
   714,475.33x = 985,990.59 × 404,377.89
4. Step 4: Simplify right side
   714,475.33x = 398,712,789,414.10
5. Step 5: Solve for x
   x = 398,712,789,414.10/714,475.33
6. Step 6: Final answer
   x = 558,049.77