Finding the Fourth Proportional to 2,065.15, 2,850.10 and 1,180.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.15 : 2,850.10 = 1,180.78 : x
2. Step 2: Convert to fraction form
   2,065.15/2,850.10 = 1,180.78/x
3. Step 3: Cross multiply
   2,065.15x = 2,850.10 × 1,180.78
4. Step 4: Simplify right side
   2,065.15x = 3,365,341.08
5. Step 5: Solve for x
   x = 3,365,341.08/2,065.15
6. Step 6: Final answer
   x = 1,629.59