Finding the Fourth Proportional to 2,019.93, 2,786.26 and 1,222.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.93 : 2,786.26 = 1,222.68 : x
2. Step 2: Convert to fraction form
   2,019.93/2,786.26 = 1,222.68/x
3. Step 3: Cross multiply
   2,019.93x = 2,786.26 × 1,222.68
4. Step 4: Simplify right side
   2,019.93x = 3,406,704.38
5. Step 5: Solve for x
   x = 3,406,704.38/2,019.93
6. Step 6: Final answer
   x = 1,686.55