Finding the Fourth Proportional to 1,379.50, 1,902.63 and 959.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.50 : 1,902.63 = 959.83 : x
2. Step 2: Convert to fraction form
   1,379.50/1,902.63 = 959.83/x
3. Step 3: Cross multiply
   1,379.50x = 1,902.63 × 959.83
4. Step 4: Simplify right side
   1,379.50x = 1,826,201.35
5. Step 5: Solve for x
   x = 1,826,201.35/1,379.50
6. Step 6: Final answer
   x = 1,323.81