Finding the Fourth Proportional to 2,355.90, 3,535.20 and 896.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.90 : 3,535.20 = 896.10 : x
2. Step 2: Convert to fraction form
   2,355.90/3,535.20 = 896.10/x
3. Step 3: Cross multiply
   2,355.90x = 3,535.20 × 896.10
4. Step 4: Simplify right side
   2,355.90x = 3,167,892.72
5. Step 5: Solve for x
   x = 3,167,892.72/2,355.90
6. Step 6: Final answer
   x = 1,344.66