Finding the Fourth Proportional to 1,061.02, 1,591.67 and 330.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.02 : 1,591.67 = 330.50 : x
2. Step 2: Convert to fraction form
   1,061.02/1,591.67 = 330.50/x
3. Step 3: Cross multiply
   1,061.02x = 1,591.67 × 330.50
4. Step 4: Simplify right side
   1,061.02x = 526,046.94
5. Step 5: Solve for x
   x = 526,046.94/1,061.02
6. Step 6: Final answer
   x = 495.79