Finding the Fourth Proportional to 2,074.48, 3,112.94 and 775.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.48 : 3,112.94 = 775.88 : x
2. Step 2: Convert to fraction form
   2,074.48/3,112.94 = 775.88/x
3. Step 3: Cross multiply
   2,074.48x = 3,112.94 × 775.88
4. Step 4: Simplify right side
   2,074.48x = 2,415,267.89
5. Step 5: Solve for x
   x = 2,415,267.89/2,074.48
6. Step 6: Final answer
   x = 1,164.28