Finding the Fourth Proportional to 2,108.89, 3,162.79 and 1,013.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.89 : 3,162.79 = 1,013.05 : x
2. Step 2: Convert to fraction form
   2,108.89/3,162.79 = 1,013.05/x
3. Step 3: Cross multiply
   2,108.89x = 3,162.79 × 1,013.05
4. Step 4: Simplify right side
   2,108.89x = 3,204,064.41
5. Step 5: Solve for x
   x = 3,204,064.41/2,108.89
6. Step 6: Final answer
   x = 1,519.31