Finding the Fourth Proportional to 2,061.15, 3,092.87 and 828.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.15 : 3,092.87 = 828.22 : x
2. Step 2: Convert to fraction form
   2,061.15/3,092.87 = 828.22/x
3. Step 3: Cross multiply
   2,061.15x = 3,092.87 × 828.22
4. Step 4: Simplify right side
   2,061.15x = 2,561,576.79
5. Step 5: Solve for x
   x = 2,561,576.79/2,061.15
6. Step 6: Final answer
   x = 1,242.79