Finding the Fourth Proportional to 1,409.50, 1,945.20 and 936.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.50 : 1,945.20 = 936.58 : x
2. Step 2: Convert to fraction form
   1,409.50/1,945.20 = 936.58/x
3. Step 3: Cross multiply
   1,409.50x = 1,945.20 × 936.58
4. Step 4: Simplify right side
   1,409.50x = 1,821,835.42
5. Step 5: Solve for x
   x = 1,821,835.42/1,409.50
6. Step 6: Final answer
   x = 1,292.54