Finding the Fourth Proportional to 2,066.56, 3,100.56 and 911.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.56 : 3,100.56 = 911.68 : x
2. Step 2: Convert to fraction form
   2,066.56/3,100.56 = 911.68/x
3. Step 3: Cross multiply
   2,066.56x = 3,100.56 × 911.68
4. Step 4: Simplify right side
   2,066.56x = 2,826,718.54
5. Step 5: Solve for x
   x = 2,826,718.54/2,066.56
6. Step 6: Final answer
   x = 1,367.84