Finding the Fourth Proportional to 1,433.24, 1,978.85 and 961.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.24 : 1,978.85 = 961.84 : x
2. Step 2: Convert to fraction form
   1,433.24/1,978.85 = 961.84/x
3. Step 3: Cross multiply
   1,433.24x = 1,978.85 × 961.84
4. Step 4: Simplify right side
   1,433.24x = 1,903,327.33
5. Step 5: Solve for x
   x = 1,903,327.33/1,433.24
6. Step 6: Final answer
   x = 1,327.99