Finding the Fourth Proportional to 2,215.82, 3,323.91 and 572.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.82 : 3,323.91 = 572.34 : x
2. Step 2: Convert to fraction form
   2,215.82/3,323.91 = 572.34/x
3. Step 3: Cross multiply
   2,215.82x = 3,323.91 × 572.34
4. Step 4: Simplify right side
   2,215.82x = 1,902,406.65
5. Step 5: Solve for x
   x = 1,902,406.65/2,215.82
6. Step 6: Final answer
   x = 858.56