Finding the Fourth Proportional to 2,013.98, 3,021.42 and 715.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.98 : 3,021.42 = 715.56 : x
2. Step 2: Convert to fraction form
   2,013.98/3,021.42 = 715.56/x
3. Step 3: Cross multiply
   2,013.98x = 3,021.42 × 715.56
4. Step 4: Simplify right side
   2,013.98x = 2,162,007.30
5. Step 5: Solve for x
   x = 2,162,007.30/2,013.98
6. Step 6: Final answer
   x = 1,073.50