Finding the Fourth Proportional to 2,305.52, 3,456.34 and 1,072.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,305.52 : 3,456.34 = 1,072.30 : x
2. Step 2: Convert to fraction form
   2,305.52/3,456.34 = 1,072.30/x
3. Step 3: Cross multiply
   2,305.52x = 3,456.34 × 1,072.30
4. Step 4: Simplify right side
   2,305.52x = 3,706,233.38
5. Step 5: Solve for x
   x = 3,706,233.38/2,305.52
6. Step 6: Final answer
   x = 1,607.55