Finding the Fourth Proportional to 2,911.38, 3,982.17 and 2,866.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,911.38 : 3,982.17 = 2,866.02 : x
2. Step 2: Convert to fraction form
   2,911.38/3,982.17 = 2,866.02/x
3. Step 3: Cross multiply
   2,911.38x = 3,982.17 × 2,866.02
4. Step 4: Simplify right side
   2,911.38x = 11,412,978.86
5. Step 5: Solve for x
   x = 11,412,978.86/2,911.38
6. Step 6: Final answer
   x = 3,920.13