Finding the Fourth Proportional to 1,166.92, 1,610.38 and 669.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,166.92 : 1,610.38 = 669.72 : x
2. Step 2: Convert to fraction form
   1,166.92/1,610.38 = 669.72/x
3. Step 3: Cross multiply
   1,166.92x = 1,610.38 × 669.72
4. Step 4: Simplify right side
   1,166.92x = 1,078,503.69
5. Step 5: Solve for x
   x = 1,078,503.69/1,166.92
6. Step 6: Final answer
   x = 924.23