Finding the Fourth Proportional to 2,811.61, 4,214.59 and 961.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,811.61 : 4,214.59 = 961.46 : x
2. Step 2: Convert to fraction form
   2,811.61/4,214.59 = 961.46/x
3. Step 3: Cross multiply
   2,811.61x = 4,214.59 × 961.46
4. Step 4: Simplify right side
   2,811.61x = 4,052,142.69
5. Step 5: Solve for x
   x = 4,052,142.69/2,811.61
6. Step 6: Final answer
   x = 1,441.22