Finding the Fourth Proportional to 2,643.52, 3,962.40 and 1,342.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.52 : 3,962.40 = 1,342.12 : x
2. Step 2: Convert to fraction form
   2,643.52/3,962.40 = 1,342.12/x
3. Step 3: Cross multiply
   2,643.52x = 3,962.40 × 1,342.12
4. Step 4: Simplify right side
   2,643.52x = 5,318,016.29
5. Step 5: Solve for x
   x = 5,318,016.29/2,643.52
6. Step 6: Final answer
   x = 2,011.72