Finding the Fourth Proportional to 2,439.60, 3,367.98 and 1,684.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.60 : 3,367.98 = 1,684.50 : x
2. Step 2: Convert to fraction form
   2,439.60/3,367.98 = 1,684.50/x
3. Step 3: Cross multiply
   2,439.60x = 3,367.98 × 1,684.50
4. Step 4: Simplify right side
   2,439.60x = 5,673,362.31
5. Step 5: Solve for x
   x = 5,673,362.31/2,439.60
6. Step 6: Final answer
   x = 2,325.53