Finding the Fourth Proportional to 1,258.34, 1,736.46 and 698.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.34 : 1,736.46 = 698.82 : x
2. Step 2: Convert to fraction form
   1,258.34/1,736.46 = 698.82/x
3. Step 3: Cross multiply
   1,258.34x = 1,736.46 × 698.82
4. Step 4: Simplify right side
   1,258.34x = 1,213,472.98
5. Step 5: Solve for x
   x = 1,213,472.98/1,258.34
6. Step 6: Final answer
   x = 964.35