Finding the Fourth Proportional to 3,461.59, 5,179.29 and 2,122.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,461.59 : 5,179.29 = 2,122.61 : x
2. Step 2: Convert to fraction form
   3,461.59/5,179.29 = 2,122.61/x
3. Step 3: Cross multiply
   3,461.59x = 5,179.29 × 2,122.61
4. Step 4: Simplify right side
   3,461.59x = 10,993,590.83
5. Step 5: Solve for x
   x = 10,993,590.83/3,461.59
6. Step 6: Final answer
   x = 3,175.88