Finding the Fourth Proportional to 1,238.29, 1,856.41 and 965.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.29 : 1,856.41 = 965.59 : x
2. Step 2: Convert to fraction form
   1,238.29/1,856.41 = 965.59/x
3. Step 3: Cross multiply
   1,238.29x = 1,856.41 × 965.59
4. Step 4: Simplify right side
   1,238.29x = 1,792,523.88
5. Step 5: Solve for x
   x = 1,792,523.88/1,238.29
6. Step 6: Final answer
   x = 1,447.58