Finding the Fourth Proportional to 3,085,778.88, 4,629,407.31 and 1,287,662.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,085,778.88 : 4,629,407.31 = 1,287,662.10 : x
2. Step 2: Convert to fraction form
   3,085,778.88/4,629,407.31 = 1,287,662.10/x
3. Step 3: Cross multiply
   3,085,778.88x = 4,629,407.31 × 1,287,662.10
4. Step 4: Simplify right side
   3,085,778.88x = 5,961,112,338,549.95
5. Step 5: Solve for x
   x = 5,961,112,338,549.95/3,085,778.88
6. Step 6: Final answer
   x = 1,931,801.52