Finding the Fourth Proportional to 2,788.89, 4,183.50 and 841.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.89 : 4,183.50 = 841.05 : x
2. Step 2: Convert to fraction form
   2,788.89/4,183.50 = 841.05/x
3. Step 3: Cross multiply
   2,788.89x = 4,183.50 × 841.05
4. Step 4: Simplify right side
   2,788.89x = 3,518,532.68
5. Step 5: Solve for x
   x = 3,518,532.68/2,788.89
6. Step 6: Final answer
   x = 1,261.62