Finding the Fourth Proportional to 2,773.98, 4,161.15 and 826.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,773.98 : 4,161.15 = 826.38 : x
2. Step 2: Convert to fraction form
   2,773.98/4,161.15 = 826.38/x
3. Step 3: Cross multiply
   2,773.98x = 4,161.15 × 826.38
4. Step 4: Simplify right side
   2,773.98x = 3,438,691.14
5. Step 5: Solve for x
   x = 3,438,691.14/2,773.98
6. Step 6: Final answer
   x = 1,239.62