Finding the Fourth Proportional to 1,258.91, 1,737.27 and 699.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.91 : 1,737.27 = 699.34 : x
2. Step 2: Convert to fraction form
   1,258.91/1,737.27 = 699.34/x
3. Step 3: Cross multiply
   1,258.91x = 1,737.27 × 699.34
4. Step 4: Simplify right side
   1,258.91x = 1,214,942.40
5. Step 5: Solve for x
   x = 1,214,942.40/1,258.91
6. Step 6: Final answer
   x = 965.07