Finding the Fourth Proportional to 2,218.19, 3,063.83 and 1,661.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.19 : 3,063.83 = 1,661.15 : x
2. Step 2: Convert to fraction form
   2,218.19/3,063.83 = 1,661.15/x
3. Step 3: Cross multiply
   2,218.19x = 3,063.83 × 1,661.15
4. Step 4: Simplify right side
   2,218.19x = 5,089,478.41
5. Step 5: Solve for x
   x = 5,089,478.41/2,218.19
6. Step 6: Final answer
   x = 2,294.43