Finding the Fourth Proportional to 3,485.27, 5,228.33 and 1,145.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485.27 : 5,228.33 = 1,145.53 : x
2. Step 2: Convert to fraction form
   3,485.27/5,228.33 = 1,145.53/x
3. Step 3: Cross multiply
   3,485.27x = 5,228.33 × 1,145.53
4. Step 4: Simplify right side
   3,485.27x = 5,989,177.00
5. Step 5: Solve for x
   x = 5,989,177.00/3,485.27
6. Step 6: Final answer
   x = 1,718.43