Finding the Fourth Proportional to 1,167.29, 1,610.82 and 669.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.29 : 1,610.82 = 669.91 : x
2. Step 2: Convert to fraction form
   1,167.29/1,610.82 = 669.91/x
3. Step 3: Cross multiply
   1,167.29x = 1,610.82 × 669.91
4. Step 4: Simplify right side
   1,167.29x = 1,079,104.43
5. Step 5: Solve for x
   x = 1,079,104.43/1,167.29
6. Step 6: Final answer
   x = 924.45