Finding the Fourth Proportional to 1,136.46, 1,568.61 and 670.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136.46 : 1,568.61 = 670.71 : x
2. Step 2: Convert to fraction form
   1,136.46/1,568.61 = 670.71/x
3. Step 3: Cross multiply
   1,136.46x = 1,568.61 × 670.71
4. Step 4: Simplify right side
   1,136.46x = 1,052,082.41
5. Step 5: Solve for x
   x = 1,052,082.41/1,136.46
6. Step 6: Final answer
   x = 925.75