Finding the Fourth Proportional to 2,258.54, 3,386.56 and 698.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.54 : 3,386.56 = 698.10 : x
2. Step 2: Convert to fraction form
   2,258.54/3,386.56 = 698.10/x
3. Step 3: Cross multiply
   2,258.54x = 3,386.56 × 698.10
4. Step 4: Simplify right side
   2,258.54x = 2,364,157.54
5. Step 5: Solve for x
   x = 2,364,157.54/2,258.54
6. Step 6: Final answer
   x = 1,046.76