Finding the Fourth Proportional to 1,079.71, 1,490.61 and 748.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.71 : 1,490.61 = 748.42 : x
2. Step 2: Convert to fraction form
   1,079.71/1,490.61 = 748.42/x
3. Step 3: Cross multiply
   1,079.71x = 1,490.61 × 748.42
4. Step 4: Simplify right side
   1,079.71x = 1,115,602.34
5. Step 5: Solve for x
   x = 1,115,602.34/1,079.71
6. Step 6: Final answer
   x = 1,033.24