Finding the Fourth Proportional to 3,721.72, 5,581.98 and 1,256.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.72 : 5,581.98 = 1,256.49 : x
2. Step 2: Convert to fraction form
   3,721.72/5,581.98 = 1,256.49/x
3. Step 3: Cross multiply
   3,721.72x = 5,581.98 × 1,256.49
4. Step 4: Simplify right side
   3,721.72x = 7,013,702.05
5. Step 5: Solve for x
   x = 7,013,702.05/3,721.72
6. Step 6: Final answer
   x = 1,884.53