Finding the Fourth Proportional to 1,392.96, 1,921.73 and 950.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.96 : 1,921.73 = 950.10 : x
2. Step 2: Convert to fraction form
   1,392.96/1,921.73 = 950.10/x
3. Step 3: Cross multiply
   1,392.96x = 1,921.73 × 950.10
4. Step 4: Simplify right side
   1,392.96x = 1,825,823.72
5. Step 5: Solve for x
   x = 1,825,823.72/1,392.96
6. Step 6: Final answer
   x = 1,310.75