Finding the Fourth Proportional to 2,074.10, 3,112.51 and 775.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.10 : 3,112.51 = 775.57 : x
2. Step 2: Convert to fraction form
   2,074.10/3,112.51 = 775.57/x
3. Step 3: Cross multiply
   2,074.10x = 3,112.51 × 775.57
4. Step 4: Simplify right side
   2,074.10x = 2,413,953.82
5. Step 5: Solve for x
   x = 2,413,953.82/2,074.10
6. Step 6: Final answer
   x = 1,163.86