Finding the Fourth Proportional to 2,643.56, 3,962.46 and 1,490.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.56 : 3,962.46 = 1,490.12 : x
2. Step 2: Convert to fraction form
   2,643.56/3,962.46 = 1,490.12/x
3. Step 3: Cross multiply
   2,643.56x = 3,962.46 × 1,490.12
4. Step 4: Simplify right side
   2,643.56x = 5,904,540.90
5. Step 5: Solve for x
   x = 5,904,540.90/2,643.56
6. Step 6: Final answer
   x = 2,233.56