Finding the Fourth Proportional to 1,136.53, 1,568.82 and 670.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136.53 : 1,568.82 = 670.78 : x
2. Step 2: Convert to fraction form
   1,136.53/1,568.82 = 670.78/x
3. Step 3: Cross multiply
   1,136.53x = 1,568.82 × 670.78
4. Step 4: Simplify right side
   1,136.53x = 1,052,333.78
5. Step 5: Solve for x
   x = 1,052,333.78/1,136.53
6. Step 6: Final answer
   x = 925.92