Finding the Fourth Proportional to 1,300.42, 1,950.69 and 326.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.42 : 1,950.69 = 326.53 : x
2. Step 2: Convert to fraction form
   1,300.42/1,950.69 = 326.53/x
3. Step 3: Cross multiply
   1,300.42x = 1,950.69 × 326.53
4. Step 4: Simplify right side
   1,300.42x = 636,958.81
5. Step 5: Solve for x
   x = 636,958.81/1,300.42
6. Step 6: Final answer
   x = 489.81