Finding the Fourth Proportional to 2,661.19, 3,672.88 and 1,613.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.19 : 3,672.88 = 1,613.86 : x
2. Step 2: Convert to fraction form
   2,661.19/3,672.88 = 1,613.86/x
3. Step 3: Cross multiply
   2,661.19x = 3,672.88 × 1,613.86
4. Step 4: Simplify right side
   2,661.19x = 5,927,500.90
5. Step 5: Solve for x
   x = 5,927,500.90/2,661.19
6. Step 6: Final answer
   x = 2,227.39