Finding the Fourth Proportional to 1,150.20, 1,729.86 and 1,031.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.20 : 1,729.86 = 1,031.74 : x
2. Step 2: Convert to fraction form
   1,150.20/1,729.86 = 1,031.74/x
3. Step 3: Cross multiply
   1,150.20x = 1,729.86 × 1,031.74
4. Step 4: Simplify right side
   1,150.20x = 1,784,757.56
5. Step 5: Solve for x
   x = 1,784,757.56/1,150.20
6. Step 6: Final answer
   x = 1,551.69