Finding the Fourth Proportional to 3,940.64, 5,436.88 and 2,284.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.64 : 5,436.88 = 2,284.32 : x
2. Step 2: Convert to fraction form
   3,940.64/5,436.88 = 2,284.32/x
3. Step 3: Cross multiply
   3,940.64x = 5,436.88 × 2,284.32
4. Step 4: Simplify right side
   3,940.64x = 12,419,573.72
5. Step 5: Solve for x
   x = 12,419,573.72/3,940.64
6. Step 6: Final answer
   x = 3,151.66