Finding the Fourth Proportional to 1,046.17, 1,443.72 and 580.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.17 : 1,443.72 = 580.42 : x
2. Step 2: Convert to fraction form
   1,046.17/1,443.72 = 580.42/x
3. Step 3: Cross multiply
   1,046.17x = 1,443.72 × 580.42
4. Step 4: Simplify right side
   1,046.17x = 837,963.96
5. Step 5: Solve for x
   x = 837,963.96/1,046.17
6. Step 6: Final answer
   x = 800.98