Finding the Fourth Proportional to 2,789.15, 4,183.02 and 814.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.15 : 4,183.02 = 814.25 : x
2. Step 2: Convert to fraction form
   2,789.15/4,183.02 = 814.25/x
3. Step 3: Cross multiply
   2,789.15x = 4,183.02 × 814.25
4. Step 4: Simplify right side
   2,789.15x = 3,406,003.12
5. Step 5: Solve for x
   x = 3,406,003.12/2,789.15
6. Step 6: Final answer
   x = 1,221.16