Finding the Fourth Proportional to 2,388.14, 3,581.35 and 827.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.14 : 3,581.35 = 827.72 : x
2. Step 2: Convert to fraction form
   2,388.14/3,581.35 = 827.72/x
3. Step 3: Cross multiply
   2,388.14x = 3,581.35 × 827.72
4. Step 4: Simplify right side
   2,388.14x = 2,964,355.02
5. Step 5: Solve for x
   x = 2,964,355.02/2,388.14
6. Step 6: Final answer
   x = 1,241.28