Finding the Fourth Proportional to 2,559.07, 3,839.82 and 827.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.07 : 3,839.82 = 827.69 : x
2. Step 2: Convert to fraction form
   2,559.07/3,839.82 = 827.69/x
3. Step 3: Cross multiply
   2,559.07x = 3,839.82 × 827.69
4. Step 4: Simplify right side
   2,559.07x = 3,178,190.22
5. Step 5: Solve for x
   x = 3,178,190.22/2,559.07
6. Step 6: Final answer
   x = 1,241.93