Finding the Fourth Proportional to 2,868.36, 3,958.50 and 2,168.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.36 : 3,958.50 = 2,168.52 : x
2. Step 2: Convert to fraction form
   2,868.36/3,958.50 = 2,168.52/x
3. Step 3: Cross multiply
   2,868.36x = 3,958.50 × 2,168.52
4. Step 4: Simplify right side
   2,868.36x = 8,584,086.42
5. Step 5: Solve for x
   x = 8,584,086.42/2,868.36
6. Step 6: Final answer
   x = 2,992.68