Finding the Fourth Proportional to 2,017.86, 3,025.59 and 768.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.86 : 3,025.59 = 768.55 : x
2. Step 2: Convert to fraction form
   2,017.86/3,025.59 = 768.55/x
3. Step 3: Cross multiply
   2,017.86x = 3,025.59 × 768.55
4. Step 4: Simplify right side
   2,017.86x = 2,325,317.19
5. Step 5: Solve for x
   x = 2,325,317.19/2,017.86
6. Step 6: Final answer
   x = 1,152.37