Finding the Fourth Proportional to 1,045.94, 1,443.40 and 580.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.94 : 1,443.40 = 580.18 : x
2. Step 2: Convert to fraction form
   1,045.94/1,443.40 = 580.18/x
3. Step 3: Cross multiply
   1,045.94x = 1,443.40 × 580.18
4. Step 4: Simplify right side
   1,045.94x = 837,431.81
5. Step 5: Solve for x
   x = 837,431.81/1,045.94
6. Step 6: Final answer
   x = 800.65