Finding the Fourth Proportional to 3,721.76, 5,581.32 and 1,256.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.76 : 5,581.32 = 1,256.08 : x
2. Step 2: Convert to fraction form
   3,721.76/5,581.32 = 1,256.08/x
3. Step 3: Cross multiply
   3,721.76x = 5,581.32 × 1,256.08
4. Step 4: Simplify right side
   3,721.76x = 7,010,584.43
5. Step 5: Solve for x
   x = 7,010,584.43/3,721.76
6. Step 6: Final answer
   x = 1,883.67