Finding the Fourth Proportional to 2,789.78, 4,183.38 and 841.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.78 : 4,183.38 = 841.59 : x
2. Step 2: Convert to fraction form
   2,789.78/4,183.38 = 841.59/x
3. Step 3: Cross multiply
   2,789.78x = 4,183.38 × 841.59
4. Step 4: Simplify right side
   2,789.78x = 3,520,690.77
5. Step 5: Solve for x
   x = 3,520,690.77/2,789.78
6. Step 6: Final answer
   x = 1,262.00