Finding the Fourth Proportional to 1,061.16, 1,591.56 and 330.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.16 : 1,591.56 = 330.62 : x
2. Step 2: Convert to fraction form
   1,061.16/1,591.56 = 330.62/x
3. Step 3: Cross multiply
   1,061.16x = 1,591.56 × 330.62
4. Step 4: Simplify right side
   1,061.16x = 526,201.57
5. Step 5: Solve for x
   x = 526,201.57/1,061.16
6. Step 6: Final answer
   x = 495.87