Finding the Fourth Proportional to 2,787.52, 4,181.52 and 839.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,787.52 : 4,181.52 = 839.56 : x
2. Step 2: Convert to fraction form
   2,787.52/4,181.52 = 839.56/x
3. Step 3: Cross multiply
   2,787.52x = 4,181.52 × 839.56
4. Step 4: Simplify right side
   2,787.52x = 3,510,636.93
5. Step 5: Solve for x
   x = 3,510,636.93/2,787.52
6. Step 6: Final answer
   x = 1,259.41