Finding the Fourth Proportional to 2,160.81, 2,979.72 and 1,414.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.81 : 2,979.72 = 1,414.80 : x
2. Step 2: Convert to fraction form
   2,160.81/2,979.72 = 1,414.80/x
3. Step 3: Cross multiply
   2,160.81x = 2,979.72 × 1,414.80
4. Step 4: Simplify right side
   2,160.81x = 4,215,707.86
5. Step 5: Solve for x
   x = 4,215,707.86/2,160.81
6. Step 6: Final answer
   x = 1,950.98