Finding the Fourth Proportional to 1,079.53, 1,488.89 and 725.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.53 : 1,488.89 = 725.41 : x
2. Step 2: Convert to fraction form
   1,079.53/1,488.89 = 725.41/x
3. Step 3: Cross multiply
   1,079.53x = 1,488.89 × 725.41
4. Step 4: Simplify right side
   1,079.53x = 1,080,050.06
5. Step 5: Solve for x
   x = 1,080,050.06/1,079.53
6. Step 6: Final answer
   x = 1,000.49