Finding the Fourth Proportional to 1,014.30, 1,399.82 and 572.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,014.30 : 1,399.82 = 572.18 : x
2. Step 2: Convert to fraction form
   1,014.30/1,399.82 = 572.18/x
3. Step 3: Cross multiply
   1,014.30x = 1,399.82 × 572.18
4. Step 4: Simplify right side
   1,014.30x = 800,939.15
5. Step 5: Solve for x
   x = 800,939.15/1,014.30
6. Step 6: Final answer
   x = 789.65