Finding the Fourth Proportional to 1,669.25, 2,304.32 and 1,072.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.25 : 2,304.32 = 1,072.61 : x
2. Step 2: Convert to fraction form
   1,669.25/2,304.32 = 1,072.61/x
3. Step 3: Cross multiply
   1,669.25x = 2,304.32 × 1,072.61
4. Step 4: Simplify right side
   1,669.25x = 2,471,645.12
5. Step 5: Solve for x
   x = 2,471,645.12/1,669.25
6. Step 6: Final answer
   x = 1,480.69