Finding the Fourth Proportional to 1,019.97, 1,529.31 and 326.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.97 : 1,529.31 = 326.34 : x
2. Step 2: Convert to fraction form
   1,019.97/1,529.31 = 326.34/x
3. Step 3: Cross multiply
   1,019.97x = 1,529.31 × 326.34
4. Step 4: Simplify right side
   1,019.97x = 499,075.03
5. Step 5: Solve for x
   x = 499,075.03/1,019.97
6. Step 6: Final answer
   x = 489.30