Finding the Fourth Proportional to 3,961.89, 5,467.59 and 2,390.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,961.89 : 5,467.59 = 2,390.07 : x
2. Step 2: Convert to fraction form
   3,961.89/5,467.59 = 2,390.07/x
3. Step 3: Cross multiply
   3,961.89x = 5,467.59 × 2,390.07
4. Step 4: Simplify right side
   3,961.89x = 13,067,922.83
5. Step 5: Solve for x
   x = 13,067,922.83/3,961.89
6. Step 6: Final answer
   x = 3,298.41