Finding the Fourth Proportional to 2,109.44, 2,908.20 and 1,479.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.44 : 2,908.20 = 1,479.12 : x
2. Step 2: Convert to fraction form
   2,109.44/2,908.20 = 1,479.12/x
3. Step 3: Cross multiply
   2,109.44x = 2,908.20 × 1,479.12
4. Step 4: Simplify right side
   2,109.44x = 4,301,576.78
5. Step 5: Solve for x
   x = 4,301,576.78/2,109.44
6. Step 6: Final answer
   x = 2,039.20