Finding the Fourth Proportional to 2,013.69, 3,019.95 and 715.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.69 : 3,019.95 = 715.53 : x
2. Step 2: Convert to fraction form
   2,013.69/3,019.95 = 715.53/x
3. Step 3: Cross multiply
   2,013.69x = 3,019.95 × 715.53
4. Step 4: Simplify right side
   2,013.69x = 2,160,864.82
5. Step 5: Solve for x
   x = 2,160,864.82/2,013.69
6. Step 6: Final answer
   x = 1,073.09