Finding the Fourth Proportional to 1,045.81, 1,443.27 and 580.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.81 : 1,443.27 = 580.06 : x
2. Step 2: Convert to fraction form
   1,045.81/1,443.27 = 580.06/x
3. Step 3: Cross multiply
   1,045.81x = 1,443.27 × 580.06
4. Step 4: Simplify right side
   1,045.81x = 837,183.20
5. Step 5: Solve for x
   x = 837,183.20/1,045.81
6. Step 6: Final answer
   x = 800.51