Finding the Fourth Proportional to 2,022.48, 3,013.38 and 1,890

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.48 : 3,013.38 = 1,890 : x
2. Step 2: Convert to fraction form
   2,022.48/3,013.38 = 1,890/x
3. Step 3: Cross multiply
   2,022.48x = 3,013.38 × 1,890
4. Step 4: Simplify right side
   2,022.48x = 5,695,288.20
5. Step 5: Solve for x
   x = 5,695,288.20/2,022.48
6. Step 6: Final answer
   x = 2,815.99