Finding the Fourth Proportional to 2,105.58, 3,159.03 and 1,490.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.58 : 3,159.03 = 1,490.49 : x
2. Step 2: Convert to fraction form
   2,105.58/3,159.03 = 1,490.49/x
3. Step 3: Cross multiply
   2,105.58x = 3,159.03 × 1,490.49
4. Step 4: Simplify right side
   2,105.58x = 4,708,502.62
5. Step 5: Solve for x
   x = 4,708,502.62/2,105.58
6. Step 6: Final answer
   x = 2,236.20