Finding the Fourth Proportional to 2,839.89, 4,260.07 and 892.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.89 : 4,260.07 = 892.09 : x
2. Step 2: Convert to fraction form
   2,839.89/4,260.07 = 892.09/x
3. Step 3: Cross multiply
   2,839.89x = 4,260.07 × 892.09
4. Step 4: Simplify right side
   2,839.89x = 3,800,363.62
5. Step 5: Solve for x
   x = 3,800,363.62/2,839.89
6. Step 6: Final answer
   x = 1,338.21