Finding the Fourth Proportional to 2,200.09, 3,280.72 and 2,180.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.09 : 3,280.72 = 2,180.34 : x
2. Step 2: Convert to fraction form
   2,200.09/3,280.72 = 2,180.34/x
3. Step 3: Cross multiply
   2,200.09x = 3,280.72 × 2,180.34
4. Step 4: Simplify right side
   2,200.09x = 7,153,085.04
5. Step 5: Solve for x
   x = 7,153,085.04/2,200.09
6. Step 6: Final answer
   x = 3,251.27