Finding the Fourth Proportional to 2,020.24, 2,787.60 and 1,358.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.24 : 2,787.60 = 1,358.20 : x
2. Step 2: Convert to fraction form
   2,020.24/2,787.60 = 1,358.20/x
3. Step 3: Cross multiply
   2,020.24x = 2,787.60 × 1,358.20
4. Step 4: Simplify right side
   2,020.24x = 3,786,118.32
5. Step 5: Solve for x
   x = 3,786,118.32/2,020.24
6. Step 6: Final answer
   x = 1,874.09