Finding the Fourth Proportional to 1,167.27, 1,610.82 and 636.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.27 : 1,610.82 = 636.18 : x
2. Step 2: Convert to fraction form
   1,167.27/1,610.82 = 636.18/x
3. Step 3: Cross multiply
   1,167.27x = 1,610.82 × 636.18
4. Step 4: Simplify right side
   1,167.27x = 1,024,765.85
5. Step 5: Solve for x
   x = 1,024,765.85/1,167.27
6. Step 6: Final answer
   x = 877.92