Finding the Fourth Proportional to 1,614.48, 2,422.72 and 748.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,614.48 : 2,422.72 = 748.88 : x
2. Step 2: Convert to fraction form
   1,614.48/2,422.72 = 748.88/x
3. Step 3: Cross multiply
   1,614.48x = 2,422.72 × 748.88
4. Step 4: Simplify right side
   1,614.48x = 1,814,326.55
5. Step 5: Solve for x
   x = 1,814,326.55/1,614.48
6. Step 6: Final answer
   x = 1,123.78