Finding the Fourth Proportional to 3,720.49, 5,581.56 and 1,255.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,720.49 : 5,581.56 = 1,255.18 : x
2. Step 2: Convert to fraction form
   3,720.49/5,581.56 = 1,255.18/x
3. Step 3: Cross multiply
   3,720.49x = 5,581.56 × 1,255.18
4. Step 4: Simplify right side
   3,720.49x = 7,005,862.48
5. Step 5: Solve for x
   x = 7,005,862.48/3,720.49
6. Step 6: Final answer
   x = 1,883.05