Finding the Fourth Proportional to 2,261.31, 3,391.98 and 618.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261.31 : 3,391.98 = 618.03 : x
2. Step 2: Convert to fraction form
   2,261.31/3,391.98 = 618.03/x
3. Step 3: Cross multiply
   2,261.31x = 3,391.98 × 618.03
4. Step 4: Simplify right side
   2,261.31x = 2,096,345.40
5. Step 5: Solve for x
   x = 2,096,345.40/2,261.31
6. Step 6: Final answer
   x = 927.05