Finding the Fourth Proportional to 2,050.58, 3,076.42 and 818.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,050.58 : 3,076.42 = 818.85 : x
2. Step 2: Convert to fraction form
   2,050.58/3,076.42 = 818.85/x
3. Step 3: Cross multiply
   2,050.58x = 3,076.42 × 818.85
4. Step 4: Simplify right side
   2,050.58x = 2,519,137.03
5. Step 5: Solve for x
   x = 2,519,137.03/2,050.58
6. Step 6: Final answer
   x = 1,228.50