Finding the Fourth Proportional to 1,436.56, 1,984.61 and 940.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.56 : 1,984.61 = 940.39 : x
2. Step 2: Convert to fraction form
   1,436.56/1,984.61 = 940.39/x
3. Step 3: Cross multiply
   1,436.56x = 1,984.61 × 940.39
4. Step 4: Simplify right side
   1,436.56x = 1,866,304.79
5. Step 5: Solve for x
   x = 1,866,304.79/1,436.56
6. Step 6: Final answer
   x = 1,299.15