Finding the Fourth Proportional to 2,218.22, 3,325.59 and 1,106.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.22 : 3,325.59 = 1,106.90 : x
2. Step 2: Convert to fraction form
   2,218.22/3,325.59 = 1,106.90/x
3. Step 3: Cross multiply
   2,218.22x = 3,325.59 × 1,106.90
4. Step 4: Simplify right side
   2,218.22x = 3,681,091.41
5. Step 5: Solve for x
   x = 3,681,091.41/2,218.22
6. Step 6: Final answer
   x = 1,659.48