Finding the Fourth Proportional to 1,087.43, 1,499.15 and 728.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.43 : 1,499.15 = 728.37 : x
2. Step 2: Convert to fraction form
   1,087.43/1,499.15 = 728.37/x
3. Step 3: Cross multiply
   1,087.43x = 1,499.15 × 728.37
4. Step 4: Simplify right side
   1,087.43x = 1,091,932.24
5. Step 5: Solve for x
   x = 1,091,932.24/1,087.43
6. Step 6: Final answer
   x = 1,004.14