Finding the Fourth Proportional to 1,088.69, 1,631.57 and 567.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.69 : 1,631.57 = 567.61 : x
2. Step 2: Convert to fraction form
   1,088.69/1,631.57 = 567.61/x
3. Step 3: Cross multiply
   1,088.69x = 1,631.57 × 567.61
4. Step 4: Simplify right side
   1,088.69x = 926,088.53
5. Step 5: Solve for x
   x = 926,088.53/1,088.69
6. Step 6: Final answer
   x = 850.65