Finding the Fourth Proportional to 2,635.98, 3,954.27 and 881.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.98 : 3,954.27 = 881.21 : x
2. Step 2: Convert to fraction form
   2,635.98/3,954.27 = 881.21/x
3. Step 3: Cross multiply
   2,635.98x = 3,954.27 × 881.21
4. Step 4: Simplify right side
   2,635.98x = 3,484,552.15
5. Step 5: Solve for x
   x = 3,484,552.15/2,635.98
6. Step 6: Final answer
   x = 1,321.92