Finding the Fourth Proportional to 3,897.29, 5,380.47 and 2,574.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897.29 : 5,380.47 = 2,574.83 : x
2. Step 2: Convert to fraction form
   3,897.29/5,380.47 = 2,574.83/x
3. Step 3: Cross multiply
   3,897.29x = 5,380.47 × 2,574.83
4. Step 4: Simplify right side
   3,897.29x = 13,853,768.67
5. Step 5: Solve for x
   x = 13,853,768.67/3,897.29
6. Step 6: Final answer
   x = 3,554.72