Finding the Fourth Proportional to 1,258.29, 1,736.51 and 698.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.29 : 1,736.51 = 698.82 : x
2. Step 2: Convert to fraction form
   1,258.29/1,736.51 = 698.82/x
3. Step 3: Cross multiply
   1,258.29x = 1,736.51 × 698.82
4. Step 4: Simplify right side
   1,258.29x = 1,213,509.67
5. Step 5: Solve for x
   x = 1,213,509.67/1,258.29
6. Step 6: Final answer
   x = 964.41