Finding the Fourth Proportional to 2,012.89, 3,019.82 and 842.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.89 : 3,019.82 = 842.24 : x
2. Step 2: Convert to fraction form
   2,012.89/3,019.82 = 842.24/x
3. Step 3: Cross multiply
   2,012.89x = 3,019.82 × 842.24
4. Step 4: Simplify right side
   2,012.89x = 2,543,421.27
5. Step 5: Solve for x
   x = 2,543,421.27/2,012.89
6. Step 6: Final answer
   x = 1,263.57