Finding the Fourth Proportional to 2,978.68, 4,468.06 and 787.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.68 : 4,468.06 = 787.44 : x
2. Step 2: Convert to fraction form
   2,978.68/4,468.06 = 787.44/x
3. Step 3: Cross multiply
   2,978.68x = 4,468.06 × 787.44
4. Step 4: Simplify right side
   2,978.68x = 3,518,329.17
5. Step 5: Solve for x
   x = 3,518,329.17/2,978.68
6. Step 6: Final answer
   x = 1,181.17