Finding the Fourth Proportional to 1,379.24, 1,901.48 and 936.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.24 : 1,901.48 = 936.37 : x
2. Step 2: Convert to fraction form
   1,379.24/1,901.48 = 936.37/x
3. Step 3: Cross multiply
   1,379.24x = 1,901.48 × 936.37
4. Step 4: Simplify right side
   1,379.24x = 1,780,488.83
5. Step 5: Solve for x
   x = 1,780,488.83/1,379.24
6. Step 6: Final answer
   x = 1,290.92