Finding the Fourth Proportional to 3,581.34, 5,370.72 and 1,240.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,581.34 : 5,370.72 = 1,240.71 : x
2. Step 2: Convert to fraction form
   3,581.34/5,370.72 = 1,240.71/x
3. Step 3: Cross multiply
   3,581.34x = 5,370.72 × 1,240.71
4. Step 4: Simplify right side
   3,581.34x = 6,663,506.01
5. Step 5: Solve for x
   x = 6,663,506.01/3,581.34
6. Step 6: Final answer
   x = 1,860.62