Finding the Fourth Proportional to 1,046.10, 1,443.54 and 580.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.10 : 1,443.54 = 580.35 : x
2. Step 2: Convert to fraction form
   1,046.10/1,443.54 = 580.35/x
3. Step 3: Cross multiply
   1,046.10x = 1,443.54 × 580.35
4. Step 4: Simplify right side
   1,046.10x = 837,758.44
5. Step 5: Solve for x
   x = 837,758.44/1,046.10
6. Step 6: Final answer
   x = 800.84