Finding the Fourth Proportional to 2,399.61, 3,599.52 and 1,423.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.61 : 3,599.52 = 1,423.56 : x
2. Step 2: Convert to fraction form
   2,399.61/3,599.52 = 1,423.56/x
3. Step 3: Cross multiply
   2,399.61x = 3,599.52 × 1,423.56
4. Step 4: Simplify right side
   2,399.61x = 5,124,132.69
5. Step 5: Solve for x
   x = 5,124,132.69/2,399.61
6. Step 6: Final answer
   x = 2,135.40