Finding the Fourth Proportional to 3,900.12, 5,846.82 and 1,590.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.12 : 5,846.82 = 1,590.12 : x
2. Step 2: Convert to fraction form
   3,900.12/5,846.82 = 1,590.12/x
3. Step 3: Cross multiply
   3,900.12x = 5,846.82 × 1,590.12
4. Step 4: Simplify right side
   3,900.12x = 9,297,145.42
5. Step 5: Solve for x
   x = 9,297,145.42/3,900.12
6. Step 6: Final answer
   x = 2,383.81