Finding the Fourth Proportional to 2,106.79, 2,907.72 and 1,608.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.79 : 2,907.72 = 1,608.49 : x
2. Step 2: Convert to fraction form
   2,106.79/2,907.72 = 1,608.49/x
3. Step 3: Cross multiply
   2,106.79x = 2,907.72 × 1,608.49
4. Step 4: Simplify right side
   2,106.79x = 4,677,038.54
5. Step 5: Solve for x
   x = 4,677,038.54/2,106.79
6. Step 6: Final answer
   x = 2,219.98