Finding the Fourth Proportional to 2,656.80, 3,978.72 and 1,499.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.80 : 3,978.72 = 1,499.04 : x
2. Step 2: Convert to fraction form
   2,656.80/3,978.72 = 1,499.04/x
3. Step 3: Cross multiply
   2,656.80x = 3,978.72 × 1,499.04
4. Step 4: Simplify right side
   2,656.80x = 5,964,260.43
5. Step 5: Solve for x
   x = 5,964,260.43/2,656.80
6. Step 6: Final answer
   x = 2,244.90