Finding the Fourth Proportional to 2,615.39, 3,924.35 and 1,299.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.39 : 3,924.35 = 1,299.27 : x
2. Step 2: Convert to fraction form
   2,615.39/3,924.35 = 1,299.27/x
3. Step 3: Cross multiply
   2,615.39x = 3,924.35 × 1,299.27
4. Step 4: Simplify right side
   2,615.39x = 5,098,803.32
5. Step 5: Solve for x
   x = 5,098,803.32/2,615.39
6. Step 6: Final answer
   x = 1,949.54