Finding the Fourth Proportional to 3,172.91, 4,758.59 and 1,324.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,172.91 : 4,758.59 = 1,324.05 : x
2. Step 2: Convert to fraction form
   3,172.91/4,758.59 = 1,324.05/x
3. Step 3: Cross multiply
   3,172.91x = 4,758.59 × 1,324.05
4. Step 4: Simplify right side
   3,172.91x = 6,300,604.47
5. Step 5: Solve for x
   x = 6,300,604.47/3,172.91
6. Step 6: Final answer
   x = 1,985.75