Finding the Fourth Proportional to 2,022.52, 2,790.40 and 1,315.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.52 : 2,790.40 = 1,315.24 : x
2. Step 2: Convert to fraction form
   2,022.52/2,790.40 = 1,315.24/x
3. Step 3: Cross multiply
   2,022.52x = 2,790.40 × 1,315.24
4. Step 4: Simplify right side
   2,022.52x = 3,670,037.90
5. Step 5: Solve for x
   x = 3,670,037.90/2,022.52
6. Step 6: Final answer
   x = 1,814.59