Finding the Fourth Proportional to 1,150.20, 1,586.70 and 756.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.20 : 1,586.70 = 756.72 : x
2. Step 2: Convert to fraction form
   1,150.20/1,586.70 = 756.72/x
3. Step 3: Cross multiply
   1,150.20x = 1,586.70 × 756.72
4. Step 4: Simplify right side
   1,150.20x = 1,200,687.62
5. Step 5: Solve for x
   x = 1,200,687.62/1,150.20
6. Step 6: Final answer
   x = 1,043.89