Finding the Fourth Proportional to 2,074.11, 3,111.05 and 775.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.11 : 3,111.05 = 775.48 : x
2. Step 2: Convert to fraction form
   2,074.11/3,111.05 = 775.48/x
3. Step 3: Cross multiply
   2,074.11x = 3,111.05 × 775.48
4. Step 4: Simplify right side
   2,074.11x = 2,412,541.50
5. Step 5: Solve for x
   x = 2,412,541.50/2,074.11
6. Step 6: Final answer
   x = 1,163.17