Finding the Fourth Proportional to 2,650.42, 3,976.35 and 919.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.42 : 3,976.35 = 919.18 : x
2. Step 2: Convert to fraction form
   2,650.42/3,976.35 = 919.18/x
3. Step 3: Cross multiply
   2,650.42x = 3,976.35 × 919.18
4. Step 4: Simplify right side
   2,650.42x = 3,654,981.39
5. Step 5: Solve for x
   x = 3,654,981.39/2,650.42
6. Step 6: Final answer
   x = 1,379.02