Finding the Fourth Proportional to 2,961.72, 4,442.81 and 881.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,961.72 : 4,442.81 = 881.69 : x
2. Step 2: Convert to fraction form
   2,961.72/4,442.81 = 881.69/x
3. Step 3: Cross multiply
   2,961.72x = 4,442.81 × 881.69
4. Step 4: Simplify right side
   2,961.72x = 3,917,154.53
5. Step 5: Solve for x
   x = 3,917,154.53/2,961.72
6. Step 6: Final answer
   x = 1,322.59