Finding the Fourth Proportional to 2,919.48, 4,379.94 and 945.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,919.48 : 4,379.94 = 945.10 : x
2. Step 2: Convert to fraction form
   2,919.48/4,379.94 = 945.10/x
3. Step 3: Cross multiply
   2,919.48x = 4,379.94 × 945.10
4. Step 4: Simplify right side
   2,919.48x = 4,139,481.29
5. Step 5: Solve for x
   x = 4,139,481.29/2,919.48
6. Step 6: Final answer
   x = 1,417.88