Finding the Fourth Proportional to 2,919.42, 4,379.69 and 945.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,919.42 : 4,379.69 = 945.54 : x
2. Step 2: Convert to fraction form
   2,919.42/4,379.69 = 945.54/x
3. Step 3: Cross multiply
   2,919.42x = 4,379.69 × 945.54
4. Step 4: Simplify right side
   2,919.42x = 4,141,174.45
5. Step 5: Solve for x
   x = 4,141,174.45/2,919.42
6. Step 6: Final answer
   x = 1,418.49