Finding the Fourth Proportional to 3,722.72, 5,583.48 and 1,257.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,722.72 : 5,583.48 = 1,257.49 : x
2. Step 2: Convert to fraction form
   3,722.72/5,583.48 = 1,257.49/x
3. Step 3: Cross multiply
   3,722.72x = 5,583.48 × 1,257.49
4. Step 4: Simplify right side
   3,722.72x = 7,021,151.59
5. Step 5: Solve for x
   x = 7,021,151.59/3,722.72
6. Step 6: Final answer
   x = 1,886.03