Finding the Fourth Proportional to 1,136.72, 1,706.58 and 956.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136.72 : 1,706.58 = 956.36 : x
2. Step 2: Convert to fraction form
   1,136.72/1,706.58 = 956.36/x
3. Step 3: Cross multiply
   1,136.72x = 1,706.58 × 956.36
4. Step 4: Simplify right side
   1,136.72x = 1,632,104.85
5. Step 5: Solve for x
   x = 1,632,104.85/1,136.72
6. Step 6: Final answer
   x = 1,435.80