Finding the Fourth Proportional to 2,182.19, 3,272.20 and 1,142.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.19 : 3,272.20 = 1,142.15 : x
2. Step 2: Convert to fraction form
   2,182.19/3,272.20 = 1,142.15/x
3. Step 3: Cross multiply
   2,182.19x = 3,272.20 × 1,142.15
4. Step 4: Simplify right side
   2,182.19x = 3,737,324.01
5. Step 5: Solve for x
   x = 3,737,324.01/2,182.19
6. Step 6: Final answer
   x = 1,712.65