Finding the Fourth Proportional to 2,741.80, 4,113.31 and 1,280.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,741.80 : 4,113.31 = 1,280.16 : x
2. Step 2: Convert to fraction form
   2,741.80/4,113.31 = 1,280.16/x
3. Step 3: Cross multiply
   2,741.80x = 4,113.31 × 1,280.16
4. Step 4: Simplify right side
   2,741.80x = 5,265,667.96
5. Step 5: Solve for x
   x = 5,265,667.96/2,741.80
6. Step 6: Final answer
   x = 1,920.51