Finding the Fourth Proportional to 2,978.55, 4,467.33 and 787.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.55 : 4,467.33 = 787.41 : x
2. Step 2: Convert to fraction form
   2,978.55/4,467.33 = 787.41/x
3. Step 3: Cross multiply
   2,978.55x = 4,467.33 × 787.41
4. Step 4: Simplify right side
   2,978.55x = 3,517,620.32
5. Step 5: Solve for x
   x = 3,517,620.32/2,978.55
6. Step 6: Final answer
   x = 1,180.98