Finding the Fourth Proportional to 1,623.56, 2,241.12 and 960.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.56 : 2,241.12 = 960.65 : x
2. Step 2: Convert to fraction form
   1,623.56/2,241.12 = 960.65/x
3. Step 3: Cross multiply
   1,623.56x = 2,241.12 × 960.65
4. Step 4: Simplify right side
   1,623.56x = 2,152,920.72
5. Step 5: Solve for x
   x = 2,152,920.72/1,623.56
6. Step 6: Final answer
   x = 1,326.05