Finding the Fourth Proportional to 2,186.29, 3,278.83 and 953.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.29 : 3,278.83 = 953.42 : x
2. Step 2: Convert to fraction form
   2,186.29/3,278.83 = 953.42/x
3. Step 3: Cross multiply
   2,186.29x = 3,278.83 × 953.42
4. Step 4: Simplify right side
   2,186.29x = 3,126,103.55
5. Step 5: Solve for x
   x = 3,126,103.55/2,186.29
6. Step 6: Final answer
   x = 1,429.87