Finding the Fourth Proportional to 2,677.96, 4,017.31 and 828.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,677.96 : 4,017.31 = 828.83 : x
2. Step 2: Convert to fraction form
   2,677.96/4,017.31 = 828.83/x
3. Step 3: Cross multiply
   2,677.96x = 4,017.31 × 828.83
4. Step 4: Simplify right side
   2,677.96x = 3,329,667.05
5. Step 5: Solve for x
   x = 3,329,667.05/2,677.96
6. Step 6: Final answer
   x = 1,243.36