Finding the Fourth Proportional to 2,050.87, 3,077.03 and 1,280.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,050.87 : 3,077.03 = 1,280.47 : x
2. Step 2: Convert to fraction form
   2,050.87/3,077.03 = 1,280.47/x
3. Step 3: Cross multiply
   2,050.87x = 3,077.03 × 1,280.47
4. Step 4: Simplify right side
   2,050.87x = 3,940,038.20
5. Step 5: Solve for x
   x = 3,940,038.20/2,050.87
6. Step 6: Final answer
   x = 1,921.15