Finding the Fourth Proportional to 1,392.01, 1,920.03 and 950.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.01 : 1,920.03 = 950.50 : x
2. Step 2: Convert to fraction form
   1,392.01/1,920.03 = 950.50/x
3. Step 3: Cross multiply
   1,392.01x = 1,920.03 × 950.50
4. Step 4: Simplify right side
   1,392.01x = 1,824,988.52
5. Step 5: Solve for x
   x = 1,824,988.52/1,392.01
6. Step 6: Final answer
   x = 1,311.05