Finding the Fourth Proportional to 2,658.18, 3,668.02 and 1,538.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.18 : 3,668.02 = 1,538.89 : x
2. Step 2: Convert to fraction form
   2,658.18/3,668.02 = 1,538.89/x
3. Step 3: Cross multiply
   2,658.18x = 3,668.02 × 1,538.89
4. Step 4: Simplify right side
   2,658.18x = 5,644,679.30
5. Step 5: Solve for x
   x = 5,644,679.30/2,658.18
6. Step 6: Final answer
   x = 2,123.51