Finding the Fourth Proportional to 2,559.96, 3,839.17 and 1,098.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.96 : 3,839.17 = 1,098.76 : x
2. Step 2: Convert to fraction form
   2,559.96/3,839.17 = 1,098.76/x
3. Step 3: Cross multiply
   2,559.96x = 3,839.17 × 1,098.76
4. Step 4: Simplify right side
   2,559.96x = 4,218,326.43
5. Step 5: Solve for x
   x = 4,218,326.43/2,559.96
6. Step 6: Final answer
   x = 1,647.81