Finding the Fourth Proportional to 1,623.83, 2,240.56 and 960.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.83 : 2,240.56 = 960.79 : x
2. Step 2: Convert to fraction form
   1,623.83/2,240.56 = 960.79/x
3. Step 3: Cross multiply
   1,623.83x = 2,240.56 × 960.79
4. Step 4: Simplify right side
   1,623.83x = 2,152,707.64
5. Step 5: Solve for x
   x = 2,152,707.64/1,623.83
6. Step 6: Final answer
   x = 1,325.70