Finding the Fourth Proportional to 1,085.30, 1,496.69 and 731.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.30 : 1,496.69 = 731.28 : x
2. Step 2: Convert to fraction form
   1,085.30/1,496.69 = 731.28/x
3. Step 3: Cross multiply
   1,085.30x = 1,496.69 × 731.28
4. Step 4: Simplify right side
   1,085.30x = 1,094,496.77
5. Step 5: Solve for x
   x = 1,094,496.77/1,085.30
6. Step 6: Final answer
   x = 1,008.48