Finding the Fourth Proportional to 2,561.94, 3,843.52 and 830.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.94 : 3,843.52 = 830.56 : x
2. Step 2: Convert to fraction form
   2,561.94/3,843.52 = 830.56/x
3. Step 3: Cross multiply
   2,561.94x = 3,843.52 × 830.56
4. Step 4: Simplify right side
   2,561.94x = 3,192,273.97
5. Step 5: Solve for x
   x = 3,192,273.97/2,561.94
6. Step 6: Final answer
   x = 1,246.04