Finding the Fourth Proportional to 728,443.05, 1,002,963.91 and 619,332.81

Step by Step Solution

1. Step 1: Write the proportion equation
   728,443.05 : 1,002,963.91 = 619,332.81 : x
2. Step 2: Convert to fraction form
   728,443.05/1,002,963.91 = 619,332.81/x
3. Step 3: Cross multiply
   728,443.05x = 1,002,963.91 × 619,332.81
4. Step 4: Simplify right side
   728,443.05x = 621,168,456,708.89
5. Step 5: Solve for x
   x = 621,168,456,708.89/728,443.05
6. Step 6: Final answer
   x = 852,734.41