Finding the Fourth Proportional to 2,065.86, 2,850.78 and 1,181.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.86 : 2,850.78 = 1,181.55 : x
2. Step 2: Convert to fraction form
   2,065.86/2,850.78 = 1,181.55/x
3. Step 3: Cross multiply
   2,065.86x = 2,850.78 × 1,181.55
4. Step 4: Simplify right side
   2,065.86x = 3,368,339.11
5. Step 5: Solve for x
   x = 3,368,339.11/2,065.86
6. Step 6: Final answer
   x = 1,630.48