Finding the Fourth Proportional to 1,152,218.88, 1,728,597.15 and 394,066.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,218.88 : 1,728,597.15 = 394,066.17 : x
2. Step 2: Convert to fraction form
   1,152,218.88/1,728,597.15 = 394,066.17/x
3. Step 3: Cross multiply
   1,152,218.88x = 1,728,597.15 × 394,066.17
4. Step 4: Simplify right side
   1,152,218.88x = 681,181,658,373.42
5. Step 5: Solve for x
   x = 681,181,658,373.42/1,152,218.88
6. Step 6: Final answer
   x = 591,191.20