Finding the Fourth Proportional to 1,079.71, 1,490.56 and 727.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.71 : 1,490.56 = 727.48 : x
2. Step 2: Convert to fraction form
   1,079.71/1,490.56 = 727.48/x
3. Step 3: Cross multiply
   1,079.71x = 1,490.56 × 727.48
4. Step 4: Simplify right side
   1,079.71x = 1,084,352.59
5. Step 5: Solve for x
   x = 1,084,352.59/1,079.71
6. Step 6: Final answer
   x = 1,004.30