Finding the Fourth Proportional to 2,650.67, 3,976.02 and 919.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.67 : 3,976.02 = 919.30 : x
2. Step 2: Convert to fraction form
   2,650.67/3,976.02 = 919.30/x
3. Step 3: Cross multiply
   2,650.67x = 3,976.02 × 919.30
4. Step 4: Simplify right side
   2,650.67x = 3,655,130.71
5. Step 5: Solve for x
   x = 3,655,130.71/2,650.67
6. Step 6: Final answer
   x = 1,378.95