Finding the Fourth Proportional to 1,436.29, 1,982.89 and 939.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.29 : 1,982.89 = 939.44 : x
2. Step 2: Convert to fraction form
   1,436.29/1,982.89 = 939.44/x
3. Step 3: Cross multiply
   1,436.29x = 1,982.89 × 939.44
4. Step 4: Simplify right side
   1,436.29x = 1,862,806.18
5. Step 5: Solve for x
   x = 1,862,806.18/1,436.29
6. Step 6: Final answer
   x = 1,296.96