Finding the Fourth Proportional to 2,013.89, 3,021.32 and 843.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.89 : 3,021.32 = 843.24 : x
2. Step 2: Convert to fraction form
   2,013.89/3,021.32 = 843.24/x
3. Step 3: Cross multiply
   2,013.89x = 3,021.32 × 843.24
4. Step 4: Simplify right side
   2,013.89x = 2,547,697.88
5. Step 5: Solve for x
   x = 2,547,697.88/2,013.89
6. Step 6: Final answer
   x = 1,265.06