Finding the Fourth Proportional to 2,055.22, 2,836.32 and 1,216.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.22 : 2,836.32 = 1,216.42 : x
2. Step 2: Convert to fraction form
   2,055.22/2,836.32 = 1,216.42/x
3. Step 3: Cross multiply
   2,055.22x = 2,836.32 × 1,216.42
4. Step 4: Simplify right side
   2,055.22x = 3,450,156.37
5. Step 5: Solve for x
   x = 3,450,156.37/2,055.22
6. Step 6: Final answer
   x = 1,678.73