Finding the Fourth Proportional to 2,419.86, 3,630.21 and 880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,419.86 : 3,630.21 = 880.50 : x
2. Step 2: Convert to fraction form
   2,419.86/3,630.21 = 880.50/x
3. Step 3: Cross multiply
   2,419.86x = 3,630.21 × 880.50
4. Step 4: Simplify right side
   2,419.86x = 3,196,399.91
5. Step 5: Solve for x
   x = 3,196,399.91/2,419.86
6. Step 6: Final answer
   x = 1,320.90