Finding the Fourth Proportional to 2,662.80, 3,674.57 and 1,668.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.80 : 3,674.57 = 1,668.61 : x
2. Step 2: Convert to fraction form
   2,662.80/3,674.57 = 1,668.61/x
3. Step 3: Cross multiply
   2,662.80x = 3,674.57 × 1,668.61
4. Step 4: Simplify right side
   2,662.80x = 6,131,424.25
5. Step 5: Solve for x
   x = 6,131,424.25/2,662.80
6. Step 6: Final answer
   x = 2,302.62