Finding the Fourth Proportional to 2,215.50, 3,323.12 and 676.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.50 : 3,323.12 = 676.38 : x
2. Step 2: Convert to fraction form
   2,215.50/3,323.12 = 676.38/x
3. Step 3: Cross multiply
   2,215.50x = 3,323.12 × 676.38
4. Step 4: Simplify right side
   2,215.50x = 2,247,676.98
5. Step 5: Solve for x
   x = 2,247,676.98/2,215.50
6. Step 6: Final answer
   x = 1,014.53