Finding the Fourth Proportional to 2,154.92, 2,967.12 and 1,684.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.92 : 2,967.12 = 1,684.72 : x
2. Step 2: Convert to fraction form
   2,154.92/2,967.12 = 1,684.72/x
3. Step 3: Cross multiply
   2,154.92x = 2,967.12 × 1,684.72
4. Step 4: Simplify right side
   2,154.92x = 4,998,766.41
5. Step 5: Solve for x
   x = 4,998,766.41/2,154.92
6. Step 6: Final answer
   x = 2,319.70