Finding the Fourth Proportional to 2,013.76, 3,019.20 and 1,243.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.76 : 3,019.20 = 1,243.52 : x
2. Step 2: Convert to fraction form
   2,013.76/3,019.20 = 1,243.52/x
3. Step 3: Cross multiply
   2,013.76x = 3,019.20 × 1,243.52
4. Step 4: Simplify right side
   2,013.76x = 3,754,435.58
5. Step 5: Solve for x
   x = 3,754,435.58/2,013.76
6. Step 6: Final answer
   x = 1,864.39