Finding the Fourth Proportional to 2,417.69, 3,620.22 and 1,319.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,417.69 : 3,620.22 = 1,319.79 : x
2. Step 2: Convert to fraction form
   2,417.69/3,620.22 = 1,319.79/x
3. Step 3: Cross multiply
   2,417.69x = 3,620.22 × 1,319.79
4. Step 4: Simplify right side
   2,417.69x = 4,777,930.15
5. Step 5: Solve for x
   x = 4,777,930.15/2,417.69
6. Step 6: Final answer
   x = 1,976.24