Finding the Fourth Proportional to 1,857.43, 2,784.61 and 1,448.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.43 : 2,784.61 = 1,448.38 : x
2. Step 2: Convert to fraction form
   1,857.43/2,784.61 = 1,448.38/x
3. Step 3: Cross multiply
   1,857.43x = 2,784.61 × 1,448.38
4. Step 4: Simplify right side
   1,857.43x = 4,033,178.72
5. Step 5: Solve for x
   x = 4,033,178.72/1,857.43
6. Step 6: Final answer
   x = 2,171.37