Finding the Fourth Proportional to 1,868.02, 2,578.79 and 1,447.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.02 : 2,578.79 = 1,447.42 : x
2. Step 2: Convert to fraction form
   1,868.02/2,578.79 = 1,447.42/x
3. Step 3: Cross multiply
   1,868.02x = 2,578.79 × 1,447.42
4. Step 4: Simplify right side
   1,868.02x = 3,732,589.39
5. Step 5: Solve for x
   x = 3,732,589.39/1,868.02
6. Step 6: Final answer
   x = 1,998.16