Finding the Fourth Proportional to 2,123.91, 3,186.75 and 1,029.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.91 : 3,186.75 = 1,029.09 : x
2. Step 2: Convert to fraction form
   2,123.91/3,186.75 = 1,029.09/x
3. Step 3: Cross multiply
   2,123.91x = 3,186.75 × 1,029.09
4. Step 4: Simplify right side
   2,123.91x = 3,279,452.56
5. Step 5: Solve for x
   x = 3,279,452.56/2,123.91
6. Step 6: Final answer
   x = 1,544.06