Finding the Fourth Proportional to 1,281.56, 1,768.42 and 757.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,281.56 : 1,768.42 = 757.52 : x
2. Step 2: Convert to fraction form
   1,281.56/1,768.42 = 757.52/x
3. Step 3: Cross multiply
   1,281.56x = 1,768.42 × 757.52
4. Step 4: Simplify right side
   1,281.56x = 1,339,613.52
5. Step 5: Solve for x
   x = 1,339,613.52/1,281.56
6. Step 6: Final answer
   x = 1,045.30