Finding the Fourth Proportional to 2,630.86, 3,942.10 and 2,108.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.86 : 3,942.10 = 2,108.14 : x
2. Step 2: Convert to fraction form
   2,630.86/3,942.10 = 2,108.14/x
3. Step 3: Cross multiply
   2,630.86x = 3,942.10 × 2,108.14
4. Step 4: Simplify right side
   2,630.86x = 8,310,498.69
5. Step 5: Solve for x
   x = 8,310,498.69/2,630.86
6. Step 6: Final answer
   x = 3,158.85