Finding the Fourth Proportional to 2,658.78, 3,669.11 and 1,479.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.78 : 3,669.11 = 1,479.86 : x
2. Step 2: Convert to fraction form
   2,658.78/3,669.11 = 1,479.86/x
3. Step 3: Cross multiply
   2,658.78x = 3,669.11 × 1,479.86
4. Step 4: Simplify right side
   2,658.78x = 5,429,743.38
5. Step 5: Solve for x
   x = 5,429,743.38/2,658.78
6. Step 6: Final answer
   x = 2,042.19