Finding the Fourth Proportional to 2,050.72, 3,078.24 and 1,912.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,050.72 : 3,078.24 = 1,912.48 : x
2. Step 2: Convert to fraction form
   2,050.72/3,078.24 = 1,912.48/x
3. Step 3: Cross multiply
   2,050.72x = 3,078.24 × 1,912.48
4. Step 4: Simplify right side
   2,050.72x = 5,887,072.44
5. Step 5: Solve for x
   x = 5,887,072.44/2,050.72
6. Step 6: Final answer
   x = 2,870.73