Finding the Fourth Proportional to 1,399.47, 1,930.68 and 950.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399.47 : 1,930.68 = 950.46 : x
2. Step 2: Convert to fraction form
   1,399.47/1,930.68 = 950.46/x
3. Step 3: Cross multiply
   1,399.47x = 1,930.68 × 950.46
4. Step 4: Simplify right side
   1,399.47x = 1,835,034.11
5. Step 5: Solve for x
   x = 1,835,034.11/1,399.47
6. Step 6: Final answer
   x = 1,311.24