Finding the Fourth Proportional to 3,572.56, 5,359.18 and 1,106.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,572.56 : 5,359.18 = 1,106.71 : x
2. Step 2: Convert to fraction form
   3,572.56/5,359.18 = 1,106.71/x
3. Step 3: Cross multiply
   3,572.56x = 5,359.18 × 1,106.71
4. Step 4: Simplify right side
   3,572.56x = 5,931,069.48
5. Step 5: Solve for x
   x = 5,931,069.48/3,572.56
6. Step 6: Final answer
   x = 1,660.18