Finding the Fourth Proportional to 2,143.58, 3,213.82 and 1,448.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.58 : 3,213.82 = 1,448.51 : x
2. Step 2: Convert to fraction form
   2,143.58/3,213.82 = 1,448.51/x
3. Step 3: Cross multiply
   2,143.58x = 3,213.82 × 1,448.51
4. Step 4: Simplify right side
   2,143.58x = 4,655,243.17
5. Step 5: Solve for x
   x = 4,655,243.17/2,143.58
6. Step 6: Final answer
   x = 2,171.71