Finding the Fourth Proportional to 3,925.82, 5,889 and 1,328.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,925.82 : 5,889 = 1,328.78 : x
2. Step 2: Convert to fraction form
   3,925.82/5,889 = 1,328.78/x
3. Step 3: Cross multiply
   3,925.82x = 5,889 × 1,328.78
4. Step 4: Simplify right side
   3,925.82x = 7,825,185.42
5. Step 5: Solve for x
   x = 7,825,185.42/3,925.82
6. Step 6: Final answer
   x = 1,993.26