Finding the Fourth Proportional to 2,789.51, 4,183.72 and 841.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.51 : 4,183.72 = 841.25 : x
2. Step 2: Convert to fraction form
   2,789.51/4,183.72 = 841.25/x
3. Step 3: Cross multiply
   2,789.51x = 4,183.72 × 841.25
4. Step 4: Simplify right side
   2,789.51x = 3,519,562.81
5. Step 5: Solve for x
   x = 3,519,562.81/2,789.51
6. Step 6: Final answer
   x = 1,261.72