Finding the Fourth Proportional to 1,150.55, 1,714.25 and 1,139.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.55 : 1,714.25 = 1,139.03 : x
2. Step 2: Convert to fraction form
   1,150.55/1,714.25 = 1,139.03/x
3. Step 3: Cross multiply
   1,150.55x = 1,714.25 × 1,139.03
4. Step 4: Simplify right side
   1,150.55x = 1,952,567.91
5. Step 5: Solve for x
   x = 1,952,567.91/1,150.55
6. Step 6: Final answer
   x = 1,697.08