Finding the Fourth Proportional to 1,581.36, 2,182.32 and 882.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581.36 : 2,182.32 = 882.72 : x
2. Step 2: Convert to fraction form
   1,581.36/2,182.32 = 882.72/x
3. Step 3: Cross multiply
   1,581.36x = 2,182.32 × 882.72
4. Step 4: Simplify right side
   1,581.36x = 1,926,377.51
5. Step 5: Solve for x
   x = 1,926,377.51/1,581.36
6. Step 6: Final answer
   x = 1,218.18