Finding the Fourth Proportional to 2,181.86, 3,272.77 and 883.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.86 : 3,272.77 = 883.31 : x
2. Step 2: Convert to fraction form
   2,181.86/3,272.77 = 883.31/x
3. Step 3: Cross multiply
   2,181.86x = 3,272.77 × 883.31
4. Step 4: Simplify right side
   2,181.86x = 2,890,849.69
5. Step 5: Solve for x
   x = 2,890,849.69/2,181.86
6. Step 6: Final answer
   x = 1,324.95