Finding the Fourth Proportional to 1,819,728.64, 2,729,494.54 and 557,559.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819,728.64 : 2,729,494.54 = 557,559.91 : x
2. Step 2: Convert to fraction form
   1,819,728.64/2,729,494.54 = 557,559.91/x
3. Step 3: Cross multiply
   1,819,728.64x = 2,729,494.54 × 557,559.91
4. Step 4: Simplify right side
   1,819,728.64x = 1,521,856,730,067.89
5. Step 5: Solve for x
   x = 1,521,856,730,067.89/1,819,728.64
6. Step 6: Final answer
   x = 836,309.71