Finding the Fourth Proportional to 3,550.05, 5,320.62 and 2,085.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,550.05 : 5,320.62 = 2,085.57 : x
2. Step 2: Convert to fraction form
   3,550.05/5,320.62 = 2,085.57/x
3. Step 3: Cross multiply
   3,550.05x = 5,320.62 × 2,085.57
4. Step 4: Simplify right side
   3,550.05x = 11,096,525.45
5. Step 5: Solve for x
   x = 11,096,525.45/3,550.05
6. Step 6: Final answer
   x = 3,125.74