Finding the Fourth Proportional to 2,613.78, 3,607.41 and 1,619.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.78 : 3,607.41 = 1,619.58 : x
2. Step 2: Convert to fraction form
   2,613.78/3,607.41 = 1,619.58/x
3. Step 3: Cross multiply
   2,613.78x = 3,607.41 × 1,619.58
4. Step 4: Simplify right side
   2,613.78x = 5,842,489.09
5. Step 5: Solve for x
   x = 5,842,489.09/2,613.78
6. Step 6: Final answer
   x = 2,235.26