Finding the Fourth Proportional to 2,499.20, 3,748.36 and 744.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.20 : 3,748.36 = 744.15 : x
2. Step 2: Convert to fraction form
   2,499.20/3,748.36 = 744.15/x
3. Step 3: Cross multiply
   2,499.20x = 3,748.36 × 744.15
4. Step 4: Simplify right side
   2,499.20x = 2,789,342.09
5. Step 5: Solve for x
   x = 2,789,342.09/2,499.20
6. Step 6: Final answer
   x = 1,116.09