Finding the Fourth Proportional to 2,443.42, 3,658.22 and 2,212.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.42 : 3,658.22 = 2,212.74 : x
2. Step 2: Convert to fraction form
   2,443.42/3,658.22 = 2,212.74/x
3. Step 3: Cross multiply
   2,443.42x = 3,658.22 × 2,212.74
4. Step 4: Simplify right side
   2,443.42x = 8,094,689.72
5. Step 5: Solve for x
   x = 8,094,689.72/2,443.42
6. Step 6: Final answer
   x = 3,312.85