Finding the Fourth Proportional to 2,986,128.24, 4,477,874.76 and 855,728.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,986,128.24 : 4,477,874.76 = 855,728.88 : x
2. Step 2: Convert to fraction form
   2,986,128.24/4,477,874.76 = 855,728.88/x
3. Step 3: Cross multiply
   2,986,128.24x = 4,477,874.76 × 855,728.88
4. Step 4: Simplify right side
   2,986,128.24x = 3,831,846,753,155.07
5. Step 5: Solve for x
   x = 3,831,846,753,155.07/2,986,128.24
6. Step 6: Final answer
   x = 1,283,215.74