Finding the Fourth Proportional to 2,658.82, 3,669.29 and 2,215.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.82 : 3,669.29 = 2,215.98 : x
2. Step 2: Convert to fraction form
   2,658.82/3,669.29 = 2,215.98/x
3. Step 3: Cross multiply
   2,658.82x = 3,669.29 × 2,215.98
4. Step 4: Simplify right side
   2,658.82x = 8,131,073.25
5. Step 5: Solve for x
   x = 8,131,073.25/2,658.82
6. Step 6: Final answer
   x = 3,058.15