Finding the Fourth Proportional to 2,131.24, 3,196.88 and 571.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.24 : 3,196.88 = 571.32 : x
2. Step 2: Convert to fraction form
   2,131.24/3,196.88 = 571.32/x
3. Step 3: Cross multiply
   2,131.24x = 3,196.88 × 571.32
4. Step 4: Simplify right side
   2,131.24x = 1,826,441.48
5. Step 5: Solve for x
   x = 1,826,441.48/2,131.24
6. Step 6: Final answer
   x = 856.99