Finding the Fourth Proportional to 2,667.75, 3,985.43 and 2,230.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.75 : 3,985.43 = 2,230.35 : x
2. Step 2: Convert to fraction form
   2,667.75/3,985.43 = 2,230.35/x
3. Step 3: Cross multiply
   2,667.75x = 3,985.43 × 2,230.35
4. Step 4: Simplify right side
   2,667.75x = 8,888,909.38
5. Step 5: Solve for x
   x = 8,888,909.38/2,667.75
6. Step 6: Final answer
   x = 3,331.99