Finding the Fourth Proportional to 2,111.38, 3,167.07 and 572.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.38 : 3,167.07 = 572.38 : x
2. Step 2: Convert to fraction form
   2,111.38/3,167.07 = 572.38/x
3. Step 3: Cross multiply
   2,111.38x = 3,167.07 × 572.38
4. Step 4: Simplify right side
   2,111.38x = 1,812,751.69
5. Step 5: Solve for x
   x = 1,812,751.69/2,111.38
6. Step 6: Final answer
   x = 858.56