Finding the Fourth Proportional to 2,776.49, 3,831.60 and 1,581.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.49 : 3,831.60 = 1,581.61 : x
2. Step 2: Convert to fraction form
   2,776.49/3,831.60 = 1,581.61/x
3. Step 3: Cross multiply
   2,776.49x = 3,831.60 × 1,581.61
4. Step 4: Simplify right side
   2,776.49x = 6,060,087.30
5. Step 5: Solve for x
   x = 6,060,087.30/2,776.49
6. Step 6: Final answer
   x = 2,182.65