Finding the Fourth Proportional to 2,104.73, 3,153.61 and 1,280.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.73 : 3,153.61 = 1,280.51 : x
2. Step 2: Convert to fraction form
   2,104.73/3,153.61 = 1,280.51/x
3. Step 3: Cross multiply
   2,104.73x = 3,153.61 × 1,280.51
4. Step 4: Simplify right side
   2,104.73x = 4,038,229.14
5. Step 5: Solve for x
   x = 4,038,229.14/2,104.73
6. Step 6: Final answer
   x = 1,918.64