Finding the Fourth Proportional to 2,012.42, 3,022.23 and 1,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.42 : 3,022.23 = 1,320.50 : x
2. Step 2: Convert to fraction form
   2,012.42/3,022.23 = 1,320.50/x
3. Step 3: Cross multiply
   2,012.42x = 3,022.23 × 1,320.50
4. Step 4: Simplify right side
   2,012.42x = 3,990,854.72
5. Step 5: Solve for x
   x = 3,990,854.72/2,012.42
6. Step 6: Final answer
   x = 1,983.11