Finding the Fourth Proportional to 1,436.88, 1,983.55 and 965.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.88 : 1,983.55 = 965.10 : x
2. Step 2: Convert to fraction form
   1,436.88/1,983.55 = 965.10/x
3. Step 3: Cross multiply
   1,436.88x = 1,983.55 × 965.10
4. Step 4: Simplify right side
   1,436.88x = 1,914,324.11
5. Step 5: Solve for x
   x = 1,914,324.11/1,436.88
6. Step 6: Final answer
   x = 1,332.28