Finding the Fourth Proportional to 2,106.91, 2,907.52 and 1,222.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.91 : 2,907.52 = 1,222.93 : x
2. Step 2: Convert to fraction form
   2,106.91/2,907.52 = 1,222.93/x
3. Step 3: Cross multiply
   2,106.91x = 2,907.52 × 1,222.93
4. Step 4: Simplify right side
   2,106.91x = 3,555,693.43
5. Step 5: Solve for x
   x = 3,555,693.43/2,106.91
6. Step 6: Final answer
   x = 1,687.63