Finding the Fourth Proportional to 479,092.72, 661,120.86 and 297,800

Step by Step Solution

1. Step 1: Write the proportion equation
   479,092.72 : 661,120.86 = 297,800 : x
2. Step 2: Convert to fraction form
   479,092.72/661,120.86 = 297,800/x
3. Step 3: Cross multiply
   479,092.72x = 661,120.86 × 297,800
4. Step 4: Simplify right side
   479,092.72x = 196,881,792,108
5. Step 5: Solve for x
   x = 196,881,792,108/479,092.72
6. Step 6: Final answer
   x = 410,947.16