Finding the Fourth Proportional to 2,663.89, 3,992.64 and 1,882.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.89 : 3,992.64 = 1,882.72 : x
2. Step 2: Convert to fraction form
   2,663.89/3,992.64 = 1,882.72/x
3. Step 3: Cross multiply
   2,663.89x = 3,992.64 × 1,882.72
4. Step 4: Simplify right side
   2,663.89x = 7,517,013.20
5. Step 5: Solve for x
   x = 7,517,013.20/2,663.89
6. Step 6: Final answer
   x = 2,821.82