Finding the Fourth Proportional to 2,479.42, 3,715.17 and 1,309.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.42 : 3,715.17 = 1,309.37 : x
2. Step 2: Convert to fraction form
   2,479.42/3,715.17 = 1,309.37/x
3. Step 3: Cross multiply
   2,479.42x = 3,715.17 × 1,309.37
4. Step 4: Simplify right side
   2,479.42x = 4,864,532.14
5. Step 5: Solve for x
   x = 4,864,532.14/2,479.42
6. Step 6: Final answer
   x = 1,961.96