Finding the Fourth Proportional to 2,260.62, 3,389.92 and 872.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,260.62 : 3,389.92 = 872.89 : x
2. Step 2: Convert to fraction form
   2,260.62/3,389.92 = 872.89/x
3. Step 3: Cross multiply
   2,260.62x = 3,389.92 × 872.89
4. Step 4: Simplify right side
   2,260.62x = 2,959,016.61
5. Step 5: Solve for x
   x = 2,959,016.61/2,260.62
6. Step 6: Final answer
   x = 1,308.94