Finding the Fourth Proportional to 3,522.29, 5,272.92 and 2,131.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,522.29 : 5,272.92 = 2,131.43 : x
2. Step 2: Convert to fraction form
   3,522.29/5,272.92 = 2,131.43/x
3. Step 3: Cross multiply
   3,522.29x = 5,272.92 × 2,131.43
4. Step 4: Simplify right side
   3,522.29x = 11,238,833.51
5. Step 5: Solve for x
   x = 11,238,833.51/3,522.29
6. Step 6: Final answer
   x = 3,190.78