Finding the Fourth Proportional to 2,718.33, 4,078.86 and 1,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,718.33 : 4,078.86 = 1,258.50 : x
2. Step 2: Convert to fraction form
   2,718.33/4,078.86 = 1,258.50/x
3. Step 3: Cross multiply
   2,718.33x = 4,078.86 × 1,258.50
4. Step 4: Simplify right side
   2,718.33x = 5,133,245.31
5. Step 5: Solve for x
   x = 5,133,245.31/2,718.33
6. Step 6: Final answer
   x = 1,888.38