Finding the Fourth Proportional to 2,730.80, 4,096.61 and 881.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,730.80 : 4,096.61 = 881.37 : x
2. Step 2: Convert to fraction form
   2,730.80/4,096.61 = 881.37/x
3. Step 3: Cross multiply
   2,730.80x = 4,096.61 × 881.37
4. Step 4: Simplify right side
   2,730.80x = 3,610,624.75
5. Step 5: Solve for x
   x = 3,610,624.75/2,730.80
6. Step 6: Final answer
   x = 1,322.19