Finding the Fourth Proportional to 2,111.52, 3,167.31 and 572.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.52 : 3,167.31 = 572.52 : x
2. Step 2: Convert to fraction form
   2,111.52/3,167.31 = 572.52/x
3. Step 3: Cross multiply
   2,111.52x = 3,167.31 × 572.52
4. Step 4: Simplify right side
   2,111.52x = 1,813,348.32
5. Step 5: Solve for x
   x = 1,813,348.32/2,111.52
6. Step 6: Final answer
   x = 858.79