Finding the Fourth Proportional to 2,013.22, 3,019.20 and 715.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.22 : 3,019.20 = 715.06 : x
2. Step 2: Convert to fraction form
   2,013.22/3,019.20 = 715.06/x
3. Step 3: Cross multiply
   2,013.22x = 3,019.20 × 715.06
4. Step 4: Simplify right side
   2,013.22x = 2,158,909.15
5. Step 5: Solve for x
   x = 2,158,909.15/2,013.22
6. Step 6: Final answer
   x = 1,072.37