Finding the Fourth Proportional to 1,168.80, 1,749.72 and 756.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.80 : 1,749.72 = 756.72 : x
2. Step 2: Convert to fraction form
   1,168.80/1,749.72 = 756.72/x
3. Step 3: Cross multiply
   1,168.80x = 1,749.72 × 756.72
4. Step 4: Simplify right side
   1,168.80x = 1,324,048.12
5. Step 5: Solve for x
   x = 1,324,048.12/1,168.80
6. Step 6: Final answer
   x = 1,132.83