Finding the Fourth Proportional to 2,255.69, 3,383.12 and 612.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.69 : 3,383.12 = 612.37 : x
2. Step 2: Convert to fraction form
   2,255.69/3,383.12 = 612.37/x
3. Step 3: Cross multiply
   2,255.69x = 3,383.12 × 612.37
4. Step 4: Simplify right side
   2,255.69x = 2,071,704.48
5. Step 5: Solve for x
   x = 2,071,704.48/2,255.69
6. Step 6: Final answer
   x = 918.44