Finding the Fourth Proportional to 2,851.92, 4,273.74 and 1,389.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.92 : 4,273.74 = 1,389.42 : x
2. Step 2: Convert to fraction form
   2,851.92/4,273.74 = 1,389.42/x
3. Step 3: Cross multiply
   2,851.92x = 4,273.74 × 1,389.42
4. Step 4: Simplify right side
   2,851.92x = 5,938,019.83
5. Step 5: Solve for x
   x = 5,938,019.83/2,851.92
6. Step 6: Final answer
   x = 2,082.11