Finding the Fourth Proportional to 3,091.50, 4,625.61 and 2,168.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,091.50 : 4,625.61 = 2,168.88 : x
2. Step 2: Convert to fraction form
   3,091.50/4,625.61 = 2,168.88/x
3. Step 3: Cross multiply
   3,091.50x = 4,625.61 × 2,168.88
4. Step 4: Simplify right side
   3,091.50x = 10,032,367.54
5. Step 5: Solve for x
   x = 10,032,367.54/3,091.50
6. Step 6: Final answer
   x = 3,245.15