Finding the Fourth Proportional to 2,287.47, 3,155.04 and 1,448.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.47 : 3,155.04 = 1,448.31 : x
2. Step 2: Convert to fraction form
   2,287.47/3,155.04 = 1,448.31/x
3. Step 3: Cross multiply
   2,287.47x = 3,155.04 × 1,448.31
4. Step 4: Simplify right side
   2,287.47x = 4,569,475.98
5. Step 5: Solve for x
   x = 4,569,475.98/2,287.47
6. Step 6: Final answer
   x = 1,997.61