Finding the Fourth Proportional to 2,061.08, 3,091.76 and 828.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.08 : 3,091.76 = 828.49 : x
2. Step 2: Convert to fraction form
   2,061.08/3,091.76 = 828.49/x
3. Step 3: Cross multiply
   2,061.08x = 3,091.76 × 828.49
4. Step 4: Simplify right side
   2,061.08x = 2,561,480.37
5. Step 5: Solve for x
   x = 2,561,480.37/2,061.08
6. Step 6: Final answer
   x = 1,242.79