Finding the Fourth Proportional to 2,104.43, 3,155.58 and 1,227.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.43 : 3,155.58 = 1,227.21 : x
2. Step 2: Convert to fraction form
   2,104.43/3,155.58 = 1,227.21/x
3. Step 3: Cross multiply
   2,104.43x = 3,155.58 × 1,227.21
4. Step 4: Simplify right side
   2,104.43x = 3,872,559.33
5. Step 5: Solve for x
   x = 3,872,559.33/2,104.43
6. Step 6: Final answer
   x = 1,840.19