Finding the Fourth Proportional to 1,150.07, 1,724.88 and 328.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.07 : 1,724.88 = 328.15 : x
2. Step 2: Convert to fraction form
   1,150.07/1,724.88 = 328.15/x
3. Step 3: Cross multiply
   1,150.07x = 1,724.88 × 328.15
4. Step 4: Simplify right side
   1,150.07x = 566,019.37
5. Step 5: Solve for x
   x = 566,019.37/1,150.07
6. Step 6: Final answer
   x = 492.16