Finding the Fourth Proportional to 2,978.80, 4,470.36 and 1,032.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.80 : 4,470.36 = 1,032.64 : x
2. Step 2: Convert to fraction form
   2,978.80/4,470.36 = 1,032.64/x
3. Step 3: Cross multiply
   2,978.80x = 4,470.36 × 1,032.64
4. Step 4: Simplify right side
   2,978.80x = 4,616,272.55
5. Step 5: Solve for x
   x = 4,616,272.55/2,978.80
6. Step 6: Final answer
   x = 1,549.71