Finding the Fourth Proportional to 2,109.50, 2,908.38 and 1,445.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.50 : 2,908.38 = 1,445.17 : x
2. Step 2: Convert to fraction form
   2,109.50/2,908.38 = 1,445.17/x
3. Step 3: Cross multiply
   2,109.50x = 2,908.38 × 1,445.17
4. Step 4: Simplify right side
   2,109.50x = 4,203,101.67
5. Step 5: Solve for x
   x = 4,203,101.67/2,109.50
6. Step 6: Final answer
   x = 1,992.46