Finding the Fourth Proportional to 2,258.89, 3,388.84 and 698.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.89 : 3,388.84 = 698.83 : x
2. Step 2: Convert to fraction form
   2,258.89/3,388.84 = 698.83/x
3. Step 3: Cross multiply
   2,258.89x = 3,388.84 × 698.83
4. Step 4: Simplify right side
   2,258.89x = 2,368,212.84
5. Step 5: Solve for x
   x = 2,368,212.84/2,258.89
6. Step 6: Final answer
   x = 1,048.40