Finding the Fourth Proportional to 1,806.70, 2,493.22 and 1,020.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.70 : 2,493.22 = 1,020.72 : x
2. Step 2: Convert to fraction form
   1,806.70/2,493.22 = 1,020.72/x
3. Step 3: Cross multiply
   1,806.70x = 2,493.22 × 1,020.72
4. Step 4: Simplify right side
   1,806.70x = 2,544,879.52
5. Step 5: Solve for x
   x = 2,544,879.52/1,806.70
6. Step 6: Final answer
   x = 1,408.58