Finding the Fourth Proportional to 2,145.68, 3,213.89 and 1,448.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.68 : 3,213.89 = 1,448.52 : x
2. Step 2: Convert to fraction form
   2,145.68/3,213.89 = 1,448.52/x
3. Step 3: Cross multiply
   2,145.68x = 3,213.89 × 1,448.52
4. Step 4: Simplify right side
   2,145.68x = 4,655,380.09
5. Step 5: Solve for x
   x = 4,655,380.09/2,145.68
6. Step 6: Final answer
   x = 2,169.65