Finding the Fourth Proportional to 2,287.89, 3,430.55 and 727.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.89 : 3,430.55 = 727.62 : x
2. Step 2: Convert to fraction form
   2,287.89/3,430.55 = 727.62/x
3. Step 3: Cross multiply
   2,287.89x = 3,430.55 × 727.62
4. Step 4: Simplify right side
   2,287.89x = 2,496,125.75
5. Step 5: Solve for x
   x = 2,496,125.75/2,287.89
6. Step 6: Final answer
   x = 1,091.02