Finding the Fourth Proportional to 1,014.15, 1,399.50 and 572.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,014.15 : 1,399.50 = 572.04 : x
2. Step 2: Convert to fraction form
   1,014.15/1,399.50 = 572.04/x
3. Step 3: Cross multiply
   1,014.15x = 1,399.50 × 572.04
4. Step 4: Simplify right side
   1,014.15x = 800,569.98
5. Step 5: Solve for x
   x = 800,569.98/1,014.15
6. Step 6: Final answer
   x = 789.40