Finding the Fourth Proportional to 2,787.28, 3,847.50 and 2,392.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,787.28 : 3,847.50 = 2,392.72 : x
2. Step 2: Convert to fraction form
   2,787.28/3,847.50 = 2,392.72/x
3. Step 3: Cross multiply
   2,787.28x = 3,847.50 × 2,392.72
4. Step 4: Simplify right side
   2,787.28x = 9,205,990.20
5. Step 5: Solve for x
   x = 9,205,990.20/2,787.28
6. Step 6: Final answer
   x = 3,302.86