Finding the Fourth Proportional to 1,136.10, 1,567.31 and 716.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136.10 : 1,567.31 = 716.16 : x
2. Step 2: Convert to fraction form
   1,136.10/1,567.31 = 716.16/x
3. Step 3: Cross multiply
   1,136.10x = 1,567.31 × 716.16
4. Step 4: Simplify right side
   1,136.10x = 1,122,441.15
5. Step 5: Solve for x
   x = 1,122,441.15/1,136.10
6. Step 6: Final answer
   x = 987.98