Finding the Fourth Proportional to 1,382.85, 1,909.35 and 940.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.85 : 1,909.35 = 940.59 : x
2. Step 2: Convert to fraction form
   1,382.85/1,909.35 = 940.59/x
3. Step 3: Cross multiply
   1,382.85x = 1,909.35 × 940.59
4. Step 4: Simplify right side
   1,382.85x = 1,795,915.52
5. Step 5: Solve for x
   x = 1,795,915.52/1,382.85
6. Step 6: Final answer
   x = 1,298.71