Finding the Fourth Proportional to 2,189.33, 3,281.90 and 727.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.33 : 3,281.90 = 727.46 : x
2. Step 2: Convert to fraction form
   2,189.33/3,281.90 = 727.46/x
3. Step 3: Cross multiply
   2,189.33x = 3,281.90 × 727.46
4. Step 4: Simplify right side
   2,189.33x = 2,387,433.66
5. Step 5: Solve for x
   x = 2,387,433.66/2,189.33
6. Step 6: Final answer
   x = 1,090.49