Finding the Fourth Proportional to 1,639.59, 2,446.78 and 1,464.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,639.59 : 2,446.78 = 1,464.42 : x
2. Step 2: Convert to fraction form
   1,639.59/2,446.78 = 1,464.42/x
3. Step 3: Cross multiply
   1,639.59x = 2,446.78 × 1,464.42
4. Step 4: Simplify right side
   1,639.59x = 3,583,113.57
5. Step 5: Solve for x
   x = 3,583,113.57/1,639.59
6. Step 6: Final answer
   x = 2,185.37