Finding the Fourth Proportional to 1,045.94, 1,443.49 and 580.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.94 : 1,443.49 = 580.28 : x
2. Step 2: Convert to fraction form
   1,045.94/1,443.49 = 580.28/x
3. Step 3: Cross multiply
   1,045.94x = 1,443.49 × 580.28
4. Step 4: Simplify right side
   1,045.94x = 837,628.38
5. Step 5: Solve for x
   x = 837,628.38/1,045.94
6. Step 6: Final answer
   x = 800.84