Finding the Fourth Proportional to 865,241.61, 1,194,057.50 and 478,081.97

Step by Step Solution

1. Step 1: Write the proportion equation
   865,241.61 : 1,194,057.50 = 478,081.97 : x
2. Step 2: Convert to fraction form
   865,241.61/1,194,057.50 = 478,081.97/x
3. Step 3: Cross multiply
   865,241.61x = 1,194,057.50 × 478,081.97
4. Step 4: Simplify right side
   865,241.61x = 570,857,362,488.01
5. Step 5: Solve for x
   x = 570,857,362,488.01/865,241.61
6. Step 6: Final answer
   x = 659,766.42