Finding the Fourth Proportional to 2,109.88, 2,908.90 and 1,445.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.88 : 2,908.90 = 1,445.54 : x
2. Step 2: Convert to fraction form
   2,109.88/2,908.90 = 1,445.54/x
3. Step 3: Cross multiply
   2,109.88x = 2,908.90 × 1,445.54
4. Step 4: Simplify right side
   2,109.88x = 4,204,934.96
5. Step 5: Solve for x
   x = 4,204,934.96/2,109.88
6. Step 6: Final answer
   x = 1,992.98