Finding the Fourth Proportional to 2,200.98, 3,285.78 and 2,124.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.98 : 3,285.78 = 2,124.10 : x
2. Step 2: Convert to fraction form
   2,200.98/3,285.78 = 2,124.10/x
3. Step 3: Cross multiply
   2,200.98x = 3,285.78 × 2,124.10
4. Step 4: Simplify right side
   2,200.98x = 6,979,325.30
5. Step 5: Solve for x
   x = 6,979,325.30/2,200.98
6. Step 6: Final answer
   x = 3,171.01