Finding the Fourth Proportional to 2,106.06, 2,906.35 and 1,222.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.06 : 2,906.35 = 1,222.37 : x
2. Step 2: Convert to fraction form
   2,106.06/2,906.35 = 1,222.37/x
3. Step 3: Cross multiply
   2,106.06x = 2,906.35 × 1,222.37
4. Step 4: Simplify right side
   2,106.06x = 3,552,635.05
5. Step 5: Solve for x
   x = 3,552,635.05/2,106.06
6. Step 6: Final answer
   x = 1,686.86