Finding the Fourth Proportional to 2,836.89, 3,906.72 and 2,435.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,836.89 : 3,906.72 = 2,435.31 : x
2. Step 2: Convert to fraction form
   2,836.89/3,906.72 = 2,435.31/x
3. Step 3: Cross multiply
   2,836.89x = 3,906.72 × 2,435.31
4. Step 4: Simplify right side
   2,836.89x = 9,514,074.28
5. Step 5: Solve for x
   x = 9,514,074.28/2,836.89
6. Step 6: Final answer
   x = 3,353.70