Finding the Fourth Proportional to 1,013.84, 1,399.37 and 572.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013.84 : 1,399.37 = 572.00 : x
2. Step 2: Convert to fraction form
   1,013.84/1,399.37 = 572.00/x
3. Step 3: Cross multiply
   1,013.84x = 1,399.37 × 572.00
4. Step 4: Simplify right side
   1,013.84x = 800,429.78
5. Step 5: Solve for x
   x = 800,429.78/1,013.84
6. Step 6: Final answer
   x = 789.51