Finding the Fourth Proportional to 2,357.87, 3,535.59 and 1,618.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.87 : 3,535.59 = 1,618.61 : x
2. Step 2: Convert to fraction form
   2,357.87/3,535.59 = 1,618.61/x
3. Step 3: Cross multiply
   2,357.87x = 3,535.59 × 1,618.61
4. Step 4: Simplify right side
   2,357.87x = 5,722,741.33
5. Step 5: Solve for x
   x = 5,722,741.33/2,357.87
6. Step 6: Final answer
   x = 2,427.08