Finding the Fourth Proportional to 3,610.42, 5,419.20 and 2,571.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,610.42 : 5,419.20 = 2,571.58 : x
2. Step 2: Convert to fraction form
   3,610.42/5,419.20 = 2,571.58/x
3. Step 3: Cross multiply
   3,610.42x = 5,419.20 × 2,571.58
4. Step 4: Simplify right side
   3,610.42x = 13,935,906.34
5. Step 5: Solve for x
   x = 13,935,906.34/3,610.42
6. Step 6: Final answer
   x = 3,859.91