Finding the Fourth Proportional to 2,304.98, 3,180.78 and 1,257.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,304.98 : 3,180.78 = 1,257.08 : x
2. Step 2: Convert to fraction form
   2,304.98/3,180.78 = 1,257.08/x
3. Step 3: Cross multiply
   2,304.98x = 3,180.78 × 1,257.08
4. Step 4: Simplify right side
   2,304.98x = 3,998,494.92
5. Step 5: Solve for x
   x = 3,998,494.92/2,304.98
6. Step 6: Final answer
   x = 1,734.72