Finding the Fourth Proportional to 2,108.43, 3,162.56 and 1,415.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.43 : 3,162.56 = 1,415.39 : x
2. Step 2: Convert to fraction form
   2,108.43/3,162.56 = 1,415.39/x
3. Step 3: Cross multiply
   2,108.43x = 3,162.56 × 1,415.39
4. Step 4: Simplify right side
   2,108.43x = 4,476,232.91
5. Step 5: Solve for x
   x = 4,476,232.91/2,108.43
6. Step 6: Final answer
   x = 2,123.02