Finding the Fourth Proportional to 1,150.57, 1,576.73 and 1,039.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.57 : 1,576.73 = 1,039.86 : x
2. Step 2: Convert to fraction form
   1,150.57/1,576.73 = 1,039.86/x
3. Step 3: Cross multiply
   1,150.57x = 1,576.73 × 1,039.86
4. Step 4: Simplify right side
   1,150.57x = 1,639,577.71
5. Step 5: Solve for x
   x = 1,639,577.71/1,150.57
6. Step 6: Final answer
   x = 1,425.01