Finding the Fourth Proportional to 1,628.69, 2,443.95 and 1,615.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,628.69 : 2,443.95 = 1,615.47 : x
2. Step 2: Convert to fraction form
   1,628.69/2,443.95 = 1,615.47/x
3. Step 3: Cross multiply
   1,628.69x = 2,443.95 × 1,615.47
4. Step 4: Simplify right side
   1,628.69x = 3,948,127.91
5. Step 5: Solve for x
   x = 3,948,127.91/1,628.69
6. Step 6: Final answer
   x = 2,424.12