Finding the Fourth Proportional to 3,669.72, 5,505.07 and 1,072.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.72 : 5,505.07 = 1,072.62 : x
2. Step 2: Convert to fraction form
   3,669.72/5,505.07 = 1,072.62/x
3. Step 3: Cross multiply
   3,669.72x = 5,505.07 × 1,072.62
4. Step 4: Simplify right side
   3,669.72x = 5,904,848.18
5. Step 5: Solve for x
   x = 5,904,848.18/3,669.72
6. Step 6: Final answer
   x = 1,609.07