Finding the Fourth Proportional to 1,436.07, 1,979.94 and 963.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.07 : 1,979.94 = 963.21 : x
2. Step 2: Convert to fraction form
   1,436.07/1,979.94 = 963.21/x
3. Step 3: Cross multiply
   1,436.07x = 1,979.94 × 963.21
4. Step 4: Simplify right side
   1,436.07x = 1,907,101.82
5. Step 5: Solve for x
   x = 1,907,101.82/1,436.07
6. Step 6: Final answer
   x = 1,328.00