Finding the Fourth Proportional to 2,366.89, 3,546.42 and 1,439.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,366.89 : 3,546.42 = 1,439.64 : x
2. Step 2: Convert to fraction form
   2,366.89/3,546.42 = 1,439.64/x
3. Step 3: Cross multiply
   2,366.89x = 3,546.42 × 1,439.64
4. Step 4: Simplify right side
   2,366.89x = 5,105,568.09
5. Step 5: Solve for x
   x = 5,105,568.09/2,366.89
6. Step 6: Final answer
   x = 2,157.08