Finding the Fourth Proportional to 2,205.87, 3,309.62 and 1,590.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.87 : 3,309.62 = 1,590.27 : x
2. Step 2: Convert to fraction form
   2,205.87/3,309.62 = 1,590.27/x
3. Step 3: Cross multiply
   2,205.87x = 3,309.62 × 1,590.27
4. Step 4: Simplify right side
   2,205.87x = 5,263,181.45
5. Step 5: Solve for x
   x = 5,263,181.45/2,205.87
6. Step 6: Final answer
   x = 2,385.99