Finding the Fourth Proportional to 2,551.42, 3,520.42 and 1,668.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,551.42 : 3,520.42 = 1,668.52 : x
2. Step 2: Convert to fraction form
   2,551.42/3,520.42 = 1,668.52/x
3. Step 3: Cross multiply
   2,551.42x = 3,520.42 × 1,668.52
4. Step 4: Simplify right side
   2,551.42x = 5,873,891.18
5. Step 5: Solve for x
   x = 5,873,891.18/2,551.42
6. Step 6: Final answer
   x = 2,302.20