Finding the Fourth Proportional to 2,585.05, 3,879.82 and 1,353.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,585.05 : 3,879.82 = 1,353.32 : x
2. Step 2: Convert to fraction form
   2,585.05/3,879.82 = 1,353.32/x
3. Step 3: Cross multiply
   2,585.05x = 3,879.82 × 1,353.32
4. Step 4: Simplify right side
   2,585.05x = 5,250,641.78
5. Step 5: Solve for x
   x = 5,250,641.78/2,585.05
6. Step 6: Final answer
   x = 2,031.16