Finding the Fourth Proportional to 2,613.61, 3,608.47 and 1,619.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.61 : 3,608.47 = 1,619.94 : x
2. Step 2: Convert to fraction form
   2,613.61/3,608.47 = 1,619.94/x
3. Step 3: Cross multiply
   2,613.61x = 3,608.47 × 1,619.94
4. Step 4: Simplify right side
   2,613.61x = 5,845,496.79
5. Step 5: Solve for x
   x = 5,845,496.79/2,613.61
6. Step 6: Final answer
   x = 2,236.56