Finding the Fourth Proportional to 1,046.28, 1,443.90 and 580.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.28 : 1,443.90 = 580.62 : x
2. Step 2: Convert to fraction form
   1,046.28/1,443.90 = 580.62/x
3. Step 3: Cross multiply
   1,046.28x = 1,443.90 × 580.62
4. Step 4: Simplify right side
   1,046.28x = 838,357.22
5. Step 5: Solve for x
   x = 838,357.22/1,046.28
6. Step 6: Final answer
   x = 801.27