Finding the Fourth Proportional to 3,570.48, 5,356.23 and 1,105.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,570.48 : 5,356.23 = 1,105.53 : x
2. Step 2: Convert to fraction form
   3,570.48/5,356.23 = 1,105.53/x
3. Step 3: Cross multiply
   3,570.48x = 5,356.23 × 1,105.53
4. Step 4: Simplify right side
   3,570.48x = 5,921,472.95
5. Step 5: Solve for x
   x = 5,921,472.95/3,570.48
6. Step 6: Final answer
   x = 1,658.45