Finding the Fourth Proportional to 2,489.36, 3,730.56 and 1,448.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489.36 : 3,730.56 = 1,448.72 : x
2. Step 2: Convert to fraction form
   2,489.36/3,730.56 = 1,448.72/x
3. Step 3: Cross multiply
   2,489.36x = 3,730.56 × 1,448.72
4. Step 4: Simplify right side
   2,489.36x = 5,404,536.88
5. Step 5: Solve for x
   x = 5,404,536.88/2,489.36
6. Step 6: Final answer
   x = 2,171.05