Finding the Fourth Proportional to 2,162.22, 3,231.49 and 1,578.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.22 : 3,231.49 = 1,578.45 : x
2. Step 2: Convert to fraction form
   2,162.22/3,231.49 = 1,578.45/x
3. Step 3: Cross multiply
   2,162.22x = 3,231.49 × 1,578.45
4. Step 4: Simplify right side
   2,162.22x = 5,100,758.98
5. Step 5: Solve for x
   x = 5,100,758.98/2,162.22
6. Step 6: Final answer
   x = 2,359.03