Finding the Fourth Proportional to 1,079.52, 1,488.42 and 902.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.52 : 1,488.42 = 902.76 : x
2. Step 2: Convert to fraction form
   1,079.52/1,488.42 = 902.76/x
3. Step 3: Cross multiply
   1,079.52x = 1,488.42 × 902.76
4. Step 4: Simplify right side
   1,079.52x = 1,343,686.04
5. Step 5: Solve for x
   x = 1,343,686.04/1,079.52
6. Step 6: Final answer
   x = 1,244.71