Finding the Fourth Proportional to 1,148.00, 1,721.69 and 326.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,148.00 : 1,721.69 = 326.06 : x
2. Step 2: Convert to fraction form
   1,148.00/1,721.69 = 326.06/x
3. Step 3: Cross multiply
   1,148.00x = 1,721.69 × 326.06
4. Step 4: Simplify right side
   1,148.00x = 561,369.43
5. Step 5: Solve for x
   x = 561,369.43/1,148.00
6. Step 6: Final answer
   x = 489.00