Finding the Fourth Proportional to 2,742.75, 4,114.72 and 1,281.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.75 : 4,114.72 = 1,281.10 : x
2. Step 2: Convert to fraction form
   2,742.75/4,114.72 = 1,281.10/x
3. Step 3: Cross multiply
   2,742.75x = 4,114.72 × 1,281.10
4. Step 4: Simplify right side
   2,742.75x = 5,271,367.79
5. Step 5: Solve for x
   x = 5,271,367.79/2,742.75
6. Step 6: Final answer
   x = 1,921.93