Finding the Fourth Proportional to 3,145.47, 4,718.89 and 954.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,145.47 : 4,718.89 = 954.37 : x
2. Step 2: Convert to fraction form
   3,145.47/4,718.89 = 954.37/x
3. Step 3: Cross multiply
   3,145.47x = 4,718.89 × 954.37
4. Step 4: Simplify right side
   3,145.47x = 4,503,556.45
5. Step 5: Solve for x
   x = 4,503,556.45/3,145.47
6. Step 6: Final answer
   x = 1,431.76