Finding the Fourth Proportional to 2,978.98, 4,467.97 and 787.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.98 : 4,467.97 = 787.93 : x
2. Step 2: Convert to fraction form
   2,978.98/4,467.97 = 787.93/x
3. Step 3: Cross multiply
   2,978.98x = 4,467.97 × 787.93
4. Step 4: Simplify right side
   2,978.98x = 3,520,458.12
5. Step 5: Solve for x
   x = 3,520,458.12/2,978.98
6. Step 6: Final answer
   x = 1,181.77