Finding the Fourth Proportional to 2,181.24, 3,272.82 and 1,155

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.24 : 3,272.82 = 1,155 : x
2. Step 2: Convert to fraction form
   2,181.24/3,272.82 = 1,155/x
3. Step 3: Cross multiply
   2,181.24x = 3,272.82 × 1,155
4. Step 4: Simplify right side
   2,181.24x = 3,780,107.10
5. Step 5: Solve for x
   x = 3,780,107.10/2,181.24
6. Step 6: Final answer
   x = 1,733.01