Finding the Fourth Proportional to 2,111.60, 3,167.24 and 572.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.60 : 3,167.24 = 572.56 : x
2. Step 2: Convert to fraction form
   2,111.60/3,167.24 = 572.56/x
3. Step 3: Cross multiply
   2,111.60x = 3,167.24 × 572.56
4. Step 4: Simplify right side
   2,111.60x = 1,813,434.93
5. Step 5: Solve for x
   x = 1,813,434.93/2,111.60
6. Step 6: Final answer
   x = 858.80