Finding the Fourth Proportional to 3,876.86, 5,349.98 and 2,108.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,876.86 : 5,349.98 = 2,108.43 : x
2. Step 2: Convert to fraction form
   3,876.86/5,349.98 = 2,108.43/x
3. Step 3: Cross multiply
   3,876.86x = 5,349.98 × 2,108.43
4. Step 4: Simplify right side
   3,876.86x = 11,280,063.60
5. Step 5: Solve for x
   x = 11,280,063.60/3,876.86
6. Step 6: Final answer
   x = 2,909.59