Finding the Fourth Proportional to 2,146.72, 2,983.48 and 2,123.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.72 : 2,983.48 = 2,123.68 : x
2. Step 2: Convert to fraction form
   2,146.72/2,983.48 = 2,123.68/x
3. Step 3: Cross multiply
   2,146.72x = 2,983.48 × 2,123.68
4. Step 4: Simplify right side
   2,146.72x = 6,335,956.81
5. Step 5: Solve for x
   x = 6,335,956.81/2,146.72
6. Step 6: Final answer
   x = 2,951.46