Finding the Fourth Proportional to 1,046.28, 1,443.89 and 580.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.28 : 1,443.89 = 580.53 : x
2. Step 2: Convert to fraction form
   1,046.28/1,443.89 = 580.53/x
3. Step 3: Cross multiply
   1,046.28x = 1,443.89 × 580.53
4. Step 4: Simplify right side
   1,046.28x = 838,218.56
5. Step 5: Solve for x
   x = 838,218.56/1,046.28
6. Step 6: Final answer
   x = 801.14