Finding the Fourth Proportional to 2,050.75, 3,077.61 and 818.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,050.75 : 3,077.61 = 818.51 : x
2. Step 2: Convert to fraction form
   2,050.75/3,077.61 = 818.51/x
3. Step 3: Cross multiply
   2,050.75x = 3,077.61 × 818.51
4. Step 4: Simplify right side
   2,050.75x = 2,519,039.17
5. Step 5: Solve for x
   x = 2,519,039.17/2,050.75
6. Step 6: Final answer
   x = 1,228.35