Finding the Fourth Proportional to 2,217.20, 3,323.43 and 1,667.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.20 : 3,323.43 = 1,667.75 : x
2. Step 2: Convert to fraction form
   2,217.20/3,323.43 = 1,667.75/x
3. Step 3: Cross multiply
   2,217.20x = 3,323.43 × 1,667.75
4. Step 4: Simplify right side
   2,217.20x = 5,542,633.77
5. Step 5: Solve for x
   x = 5,542,633.77/2,217.20
6. Step 6: Final answer
   x = 2,499.84