Finding the Fourth Proportional to 2,472.68, 3,411.42 and 1,515.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.68 : 3,411.42 = 1,515.28 : x
2. Step 2: Convert to fraction form
   2,472.68/3,411.42 = 1,515.28/x
3. Step 3: Cross multiply
   2,472.68x = 3,411.42 × 1,515.28
4. Step 4: Simplify right side
   2,472.68x = 5,169,256.50
5. Step 5: Solve for x
   x = 5,169,256.50/2,472.68
6. Step 6: Final answer
   x = 2,090.55