Finding the Fourth Proportional to 3,721.82, 5,582.20 and 1,256.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.82 : 5,582.20 = 1,256.32 : x
2. Step 2: Convert to fraction form
   3,721.82/5,582.20 = 1,256.32/x
3. Step 3: Cross multiply
   3,721.82x = 5,582.20 × 1,256.32
4. Step 4: Simplify right side
   3,721.82x = 7,013,001.59
5. Step 5: Solve for x
   x = 7,013,001.59/3,721.82
6. Step 6: Final answer
   x = 1,884.29