Finding the Fourth Proportional to 1,046.13, 1,443.72 and 580.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.13 : 1,443.72 = 580.38 : x
2. Step 2: Convert to fraction form
   1,046.13/1,443.72 = 580.38/x
3. Step 3: Cross multiply
   1,046.13x = 1,443.72 × 580.38
4. Step 4: Simplify right side
   1,046.13x = 837,899.00
5. Step 5: Solve for x
   x = 837,899.00/1,046.13
6. Step 6: Final answer
   x = 800.95