Finding the Fourth Proportional to 2,256.83, 3,385.31 and 613.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.83 : 3,385.31 = 613.41 : x
2. Step 2: Convert to fraction form
   2,256.83/3,385.31 = 613.41/x
3. Step 3: Cross multiply
   2,256.83x = 3,385.31 × 613.41
4. Step 4: Simplify right side
   2,256.83x = 2,076,584.54
5. Step 5: Solve for x
   x = 2,076,584.54/2,256.83
6. Step 6: Final answer
   x = 920.13