Finding the Fourth Proportional to 3,072.56, 4,609.52 and 1,223.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,072.56 : 4,609.52 = 1,223.75 : x
2. Step 2: Convert to fraction form
   3,072.56/4,609.52 = 1,223.75/x
3. Step 3: Cross multiply
   3,072.56x = 4,609.52 × 1,223.75
4. Step 4: Simplify right side
   3,072.56x = 5,640,870.93
5. Step 5: Solve for x
   x = 5,640,870.93/3,072.56
6. Step 6: Final answer
   x = 1,835.89