Finding the Fourth Proportional to 2,111.05, 3,166.62 and 550.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.05 : 3,166.62 = 550.96 : x
2. Step 2: Convert to fraction form
   2,111.05/3,166.62 = 550.96/x
3. Step 3: Cross multiply
   2,111.05x = 3,166.62 × 550.96
4. Step 4: Simplify right side
   2,111.05x = 1,744,680.96
5. Step 5: Solve for x
   x = 1,744,680.96/2,111.05
6. Step 6: Final answer
   x = 826.45