Finding the Fourth Proportional to 2,338.15, 3,505.38 and 1,605.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,338.15 : 3,505.38 = 1,605.55 : x
2. Step 2: Convert to fraction form
   2,338.15/3,505.38 = 1,605.55/x
3. Step 3: Cross multiply
   2,338.15x = 3,505.38 × 1,605.55
4. Step 4: Simplify right side
   2,338.15x = 5,628,062.86
5. Step 5: Solve for x
   x = 5,628,062.86/2,338.15
6. Step 6: Final answer
   x = 2,407.06