Finding the Fourth Proportional to 807,142.09, 1,113,863.61 and 444,567.28

Step by Step Solution

1. Step 1: Write the proportion equation
   807,142.09 : 1,113,863.61 = 444,567.28 : x
2. Step 2: Convert to fraction form
   807,142.09/1,113,863.61 = 444,567.28/x
3. Step 3: Cross multiply
   807,142.09x = 1,113,863.61 × 444,567.28
4. Step 4: Simplify right side
   807,142.09x = 495,187,314,271.15
5. Step 5: Solve for x
   x = 495,187,314,271.15/807,142.09
6. Step 6: Final answer
   x = 613,506.99