Finding the Fourth Proportional to 2,419.76, 3,630.86 and 959.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,419.76 : 3,630.86 = 959.94 : x
2. Step 2: Convert to fraction form
   2,419.76/3,630.86 = 959.94/x
3. Step 3: Cross multiply
   2,419.76x = 3,630.86 × 959.94
4. Step 4: Simplify right side
   2,419.76x = 3,485,402.95
5. Step 5: Solve for x
   x = 3,485,402.95/2,419.76
6. Step 6: Final answer
   x = 1,440.39