Finding the Fourth Proportional to 3,208.83, 4,811.16 and 2,109.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,208.83 : 4,811.16 = 2,109.86 : x
2. Step 2: Convert to fraction form
   3,208.83/4,811.16 = 2,109.86/x
3. Step 3: Cross multiply
   3,208.83x = 4,811.16 × 2,109.86
4. Step 4: Simplify right side
   3,208.83x = 10,150,863.49
5. Step 5: Solve for x
   x = 10,150,863.49/3,208.83
6. Step 6: Final answer
   x = 3,163.42