Finding the Fourth Proportional to 2,786.60, 4,180.33 and 1,325.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,786.60 : 4,180.33 = 1,325.25 : x
2. Step 2: Convert to fraction form
   2,786.60/4,180.33 = 1,325.25/x
3. Step 3: Cross multiply
   2,786.60x = 4,180.33 × 1,325.25
4. Step 4: Simplify right side
   2,786.60x = 5,539,992.78
5. Step 5: Solve for x
   x = 5,539,992.78/2,786.60
6. Step 6: Final answer
   x = 1,988.09