Finding the Fourth Proportional to 2,100.32, 2,898.72 and 1,512.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.32 : 2,898.72 = 1,512.80 : x
2. Step 2: Convert to fraction form
   2,100.32/2,898.72 = 1,512.80/x
3. Step 3: Cross multiply
   2,100.32x = 2,898.72 × 1,512.80
4. Step 4: Simplify right side
   2,100.32x = 4,385,183.62
5. Step 5: Solve for x
   x = 4,385,183.62/2,100.32
6. Step 6: Final answer
   x = 2,087.86