Finding the Fourth Proportional to 2,144.92, 2,961.38 and 1,920.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.92 : 2,961.38 = 1,920.46 : x
2. Step 2: Convert to fraction form
   2,144.92/2,961.38 = 1,920.46/x
3. Step 3: Cross multiply
   2,144.92x = 2,961.38 × 1,920.46
4. Step 4: Simplify right side
   2,144.92x = 5,687,211.83
5. Step 5: Solve for x
   x = 5,687,211.83/2,144.92
6. Step 6: Final answer
   x = 2,651.48