Finding the Fourth Proportional to 2,390.67, 3,584.79 and 1,611.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.67 : 3,584.79 = 1,611.86 : x
2. Step 2: Convert to fraction form
   2,390.67/3,584.79 = 1,611.86/x
3. Step 3: Cross multiply
   2,390.67x = 3,584.79 × 1,611.86
4. Step 4: Simplify right side
   2,390.67x = 5,778,161.69
5. Step 5: Solve for x
   x = 5,778,161.69/2,390.67
6. Step 6: Final answer
   x = 2,416.96