Finding the Fourth Proportional to 2,676.22, 4,013.71 and 1,288.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,676.22 : 4,013.71 = 1,288.86 : x
2. Step 2: Convert to fraction form
   2,676.22/4,013.71 = 1,288.86/x
3. Step 3: Cross multiply
   2,676.22x = 4,013.71 × 1,288.86
4. Step 4: Simplify right side
   2,676.22x = 5,173,110.27
5. Step 5: Solve for x
   x = 5,173,110.27/2,676.22
6. Step 6: Final answer
   x = 1,932.99