Finding the Fourth Proportional to 2,118.27, 2,921.88 and 1,529.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.27 : 2,921.88 = 1,529.67 : x
2. Step 2: Convert to fraction form
   2,118.27/2,921.88 = 1,529.67/x
3. Step 3: Cross multiply
   2,118.27x = 2,921.88 × 1,529.67
4. Step 4: Simplify right side
   2,118.27x = 4,469,512.18
5. Step 5: Solve for x
   x = 4,469,512.18/2,118.27
6. Step 6: Final answer
   x = 2,109.98