Finding the Fourth Proportional to 2,109.72, 2,909.84 and 1,550.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.72 : 2,909.84 = 1,550.02 : x
2. Step 2: Convert to fraction form
   2,109.72/2,909.84 = 1,550.02/x
3. Step 3: Cross multiply
   2,109.72x = 2,909.84 × 1,550.02
4. Step 4: Simplify right side
   2,109.72x = 4,510,310.20
5. Step 5: Solve for x
   x = 4,510,310.20/2,109.72
6. Step 6: Final answer
   x = 2,137.87