Finding the Fourth Proportional to 2,357.85, 3,535.38 and 897.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.85 : 3,535.38 = 897.10 : x
2. Step 2: Convert to fraction form
   2,357.85/3,535.38 = 897.10/x
3. Step 3: Cross multiply
   2,357.85x = 3,535.38 × 897.10
4. Step 4: Simplify right side
   2,357.85x = 3,171,589.40
5. Step 5: Solve for x
   x = 3,171,589.40/2,357.85
6. Step 6: Final answer
   x = 1,345.12