Finding the Fourth Proportional to 3,636.54, 5,456.89 and 1,415.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,636.54 : 5,456.89 = 1,415.08 : x
2. Step 2: Convert to fraction form
   3,636.54/5,456.89 = 1,415.08/x
3. Step 3: Cross multiply
   3,636.54x = 5,456.89 × 1,415.08
4. Step 4: Simplify right side
   3,636.54x = 7,721,918.72
5. Step 5: Solve for x
   x = 7,721,918.72/3,636.54
6. Step 6: Final answer
   x = 2,123.42