Finding the Fourth Proportional to 2,022.32, 2,790.63 and 1,137.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.32 : 2,790.63 = 1,137.99 : x
2. Step 2: Convert to fraction form
   2,022.32/2,790.63 = 1,137.99/x
3. Step 3: Cross multiply
   2,022.32x = 2,790.63 × 1,137.99
4. Step 4: Simplify right side
   2,022.32x = 3,175,709.03
5. Step 5: Solve for x
   x = 3,175,709.03/2,022.32
6. Step 6: Final answer
   x = 1,570.33