Finding the Fourth Proportional to 2,124.89, 3,186.78 and 954.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.89 : 3,186.78 = 954.24 : x
2. Step 2: Convert to fraction form
   2,124.89/3,186.78 = 954.24/x
3. Step 3: Cross multiply
   2,124.89x = 3,186.78 × 954.24
4. Step 4: Simplify right side
   2,124.89x = 3,040,952.95
5. Step 5: Solve for x
   x = 3,040,952.95/2,124.89
6. Step 6: Final answer
   x = 1,431.11