Finding the Fourth Proportional to 1,170, 1,614.62 and 756.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,170 : 1,614.62 = 756.72 : x
2. Step 2: Convert to fraction form
   1,170/1,614.62 = 756.72/x
3. Step 3: Cross multiply
   1,170x = 1,614.62 × 756.72
4. Step 4: Simplify right side
   1,170x = 1,221,815.25
5. Step 5: Solve for x
   x = 1,221,815.25/1,170
6. Step 6: Final answer
   x = 1,044.29