Finding the Fourth Proportional to 1,258.83, 1,737.24 and 699.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.83 : 1,737.24 = 699.30 : x
2. Step 2: Convert to fraction form
   1,258.83/1,737.24 = 699.30/x
3. Step 3: Cross multiply
   1,258.83x = 1,737.24 × 699.30
4. Step 4: Simplify right side
   1,258.83x = 1,214,841.50
5. Step 5: Solve for x
   x = 1,214,841.50/1,258.83
6. Step 6: Final answer
   x = 965.06