Finding the Fourth Proportional to 2,061.18, 3,092.32 and 828.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.18 : 3,092.32 = 828.64 : x
2. Step 2: Convert to fraction form
   2,061.18/3,092.32 = 828.64/x
3. Step 3: Cross multiply
   2,061.18x = 3,092.32 × 828.64
4. Step 4: Simplify right side
   2,061.18x = 2,562,420.04
5. Step 5: Solve for x
   x = 2,562,420.04/2,061.18
6. Step 6: Final answer
   x = 1,243.18