Finding the Fourth Proportional to 1,436.67, 1,982.75 and 939.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.67 : 1,982.75 = 939.51 : x
2. Step 2: Convert to fraction form
   1,436.67/1,982.75 = 939.51/x
3. Step 3: Cross multiply
   1,436.67x = 1,982.75 × 939.51
4. Step 4: Simplify right side
   1,436.67x = 1,862,808.75
5. Step 5: Solve for x
   x = 1,862,808.75/1,436.67
6. Step 6: Final answer
   x = 1,296.62