Finding the Fourth Proportional to 1,152,662.39, 1,729,076.63 and 442,690.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,662.39 : 1,729,076.63 = 442,690.43 : x
2. Step 2: Convert to fraction form
   1,152,662.39/1,729,076.63 = 442,690.43/x
3. Step 3: Cross multiply
   1,152,662.39x = 1,729,076.63 × 442,690.43
4. Step 4: Simplify right side
   1,152,662.39x = 765,445,665,978.82
5. Step 5: Solve for x
   x = 765,445,665,978.82/1,152,662.39
6. Step 6: Final answer
   x = 664,067.53