Finding the Fourth Proportional to 2,325.89, 3,209.81 and 1,278.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,325.89 : 3,209.81 = 1,278.05 : x
2. Step 2: Convert to fraction form
   2,325.89/3,209.81 = 1,278.05/x
3. Step 3: Cross multiply
   2,325.89x = 3,209.81 × 1,278.05
4. Step 4: Simplify right side
   2,325.89x = 4,102,291.28
5. Step 5: Solve for x
   x = 4,102,291.28/2,325.89
6. Step 6: Final answer
   x = 1,763.75