Finding the Fourth Proportional to 2,667.16, 3,993.66 and 2,144.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.16 : 3,993.66 = 2,144.68 : x
2. Step 2: Convert to fraction form
   2,667.16/3,993.66 = 2,144.68/x
3. Step 3: Cross multiply
   2,667.16x = 3,993.66 × 2,144.68
4. Step 4: Simplify right side
   2,667.16x = 8,565,122.73
5. Step 5: Solve for x
   x = 8,565,122.73/2,667.16
6. Step 6: Final answer
   x = 3,211.33