Finding the Fourth Proportional to 2,786.47, 4,180.16 and 1,324.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,786.47 : 4,180.16 = 1,324.83 : x
2. Step 2: Convert to fraction form
   2,786.47/4,180.16 = 1,324.83/x
3. Step 3: Cross multiply
   2,786.47x = 4,180.16 × 1,324.83
4. Step 4: Simplify right side
   2,786.47x = 5,538,001.37
5. Step 5: Solve for x
   x = 5,538,001.37/2,786.47
6. Step 6: Final answer
   x = 1,987.46