Finding the Fourth Proportional to 2,131.31, 3,196.60 and 571.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.31 : 3,196.60 = 571.42 : x
2. Step 2: Convert to fraction form
   2,131.31/3,196.60 = 571.42/x
3. Step 3: Cross multiply
   2,131.31x = 3,196.60 × 571.42
4. Step 4: Simplify right side
   2,131.31x = 1,826,603.74
5. Step 5: Solve for x
   x = 1,826,603.74/2,131.31
6. Step 6: Final answer
   x = 857.03