Finding the Fourth Proportional to 2,258.94, 3,388.59 and 699.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.94 : 3,388.59 = 699.11 : x
2. Step 2: Convert to fraction form
   2,258.94/3,388.59 = 699.11/x
3. Step 3: Cross multiply
   2,258.94x = 3,388.59 × 699.11
4. Step 4: Simplify right side
   2,258.94x = 2,368,978.46
5. Step 5: Solve for x
   x = 2,368,978.46/2,258.94
6. Step 6: Final answer
   x = 1,048.71