Finding the Fourth Proportional to 2,108.43, 3,138.41 and 2,077.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.43 : 3,138.41 = 2,077.25 : x
2. Step 2: Convert to fraction form
   2,108.43/3,138.41 = 2,077.25/x
3. Step 3: Cross multiply
   2,108.43x = 3,138.41 × 2,077.25
4. Step 4: Simplify right side
   2,108.43x = 6,519,251.67
5. Step 5: Solve for x
   x = 6,519,251.67/2,108.43
6. Step 6: Final answer
   x = 3,091.99