Finding the Fourth Proportional to 3,885.69, 5,827.71 and 1,253.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,885.69 : 5,827.71 = 1,253.43 : x
2. Step 2: Convert to fraction form
   3,885.69/5,827.71 = 1,253.43/x
3. Step 3: Cross multiply
   3,885.69x = 5,827.71 × 1,253.43
4. Step 4: Simplify right side
   3,885.69x = 7,304,647.64
5. Step 5: Solve for x
   x = 7,304,647.64/3,885.69
6. Step 6: Final answer
   x = 1,879.89