Finding the Fourth Proportional to 1,167.29, 1,610.35 and 669.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.29 : 1,610.35 = 669.81 : x
2. Step 2: Convert to fraction form
   1,167.29/1,610.35 = 669.81/x
3. Step 3: Cross multiply
   1,167.29x = 1,610.35 × 669.81
4. Step 4: Simplify right side
   1,167.29x = 1,078,626.86
5. Step 5: Solve for x
   x = 1,078,626.86/1,167.29
6. Step 6: Final answer
   x = 924.05