Finding the Fourth Proportional to 3,721.98, 5,584.42 and 1,256.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.98 : 5,584.42 = 1,256.88 : x
2. Step 2: Convert to fraction form
   3,721.98/5,584.42 = 1,256.88/x
3. Step 3: Cross multiply
   3,721.98x = 5,584.42 × 1,256.88
4. Step 4: Simplify right side
   3,721.98x = 7,018,945.81
5. Step 5: Solve for x
   x = 7,018,945.81/3,721.98
6. Step 6: Final answer
   x = 1,885.81