Finding the Fourth Proportional to 2,498.15, 3,728.22 and 2,221.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,498.15 : 3,728.22 = 2,221.37 : x
2. Step 2: Convert to fraction form
   2,498.15/3,728.22 = 2,221.37/x
3. Step 3: Cross multiply
   2,498.15x = 3,728.22 × 2,221.37
4. Step 4: Simplify right side
   2,498.15x = 8,281,737.42
5. Step 5: Solve for x
   x = 8,281,737.42/2,498.15
6. Step 6: Final answer
   x = 3,315.15