Finding the Fourth Proportional to 3,786.31, 5,678.82 and 1,013.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,786.31 : 5,678.82 = 1,013.29 : x
2. Step 2: Convert to fraction form
   3,786.31/5,678.82 = 1,013.29/x
3. Step 3: Cross multiply
   3,786.31x = 5,678.82 × 1,013.29
4. Step 4: Simplify right side
   3,786.31x = 5,754,291.52
5. Step 5: Solve for x
   x = 5,754,291.52/3,786.31
6. Step 6: Final answer
   x = 1,519.76