Finding the Fourth Proportional to 2,215.83, 3,323.71 and 572.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.83 : 3,323.71 = 572.24 : x
2. Step 2: Convert to fraction form
   2,215.83/3,323.71 = 572.24/x
3. Step 3: Cross multiply
   2,215.83x = 3,323.71 × 572.24
4. Step 4: Simplify right side
   2,215.83x = 1,901,966.69
5. Step 5: Solve for x
   x = 1,901,966.69/2,215.83
6. Step 6: Final answer
   x = 858.35