Finding the Fourth Proportional to 964.72, 1,445.72 and 759.69

Step by Step Solution

1. Step 1: Write the proportion equation
   964.72 : 1,445.72 = 759.69 : x
2. Step 2: Convert to fraction form
   964.72/1,445.72 = 759.69/x
3. Step 3: Cross multiply
   964.72x = 1,445.72 × 759.69
4. Step 4: Simplify right side
   964.72x = 1,098,300.93
5. Step 5: Solve for x
   x = 1,098,300.93/964.72
6. Step 6: Final answer
   x = 1,138.47