Finding the Fourth Proportional to 2,743.40, 4,113 and 1,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,743.40 : 4,113 = 1,281.50 : x
2. Step 2: Convert to fraction form
   2,743.40/4,113 = 1,281.50/x
3. Step 3: Cross multiply
   2,743.40x = 4,113 × 1,281.50
4. Step 4: Simplify right side
   2,743.40x = 5,270,809.50
5. Step 5: Solve for x
   x = 5,270,809.50/2,743.40
6. Step 6: Final answer
   x = 1,921.27