Finding the Fourth Proportional to 3,827.79, 5,740.25 and 1,229.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,827.79 : 5,740.25 = 1,229.31 : x
2. Step 2: Convert to fraction form
   3,827.79/5,740.25 = 1,229.31/x
3. Step 3: Cross multiply
   3,827.79x = 5,740.25 × 1,229.31
4. Step 4: Simplify right side
   3,827.79x = 7,056,540.58
5. Step 5: Solve for x
   x = 7,056,540.58/3,827.79
6. Step 6: Final answer
   x = 1,843.50