Finding the Fourth Proportional to 2,203.89, 3,308.27 and 1,280.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,203.89 : 3,308.27 = 1,280.49 : x
2. Step 2: Convert to fraction form
   2,203.89/3,308.27 = 1,280.49/x
3. Step 3: Cross multiply
   2,203.89x = 3,308.27 × 1,280.49
4. Step 4: Simplify right side
   2,203.89x = 4,236,200.25
5. Step 5: Solve for x
   x = 4,236,200.25/2,203.89
6. Step 6: Final answer
   x = 1,922.15