Finding the Fourth Proportional to 2,477.91, 3,719.22 and 919.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.91 : 3,719.22 = 919.41 : x
2. Step 2: Convert to fraction form
   2,477.91/3,719.22 = 919.41/x
3. Step 3: Cross multiply
   2,477.91x = 3,719.22 × 919.41
4. Step 4: Simplify right side
   2,477.91x = 3,419,488.06
5. Step 5: Solve for x
   x = 3,419,488.06/2,477.91
6. Step 6: Final answer
   x = 1,379.99