Finding the Fourth Proportional to 2,955.50, 4,078.56 and 1,761.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,955.50 : 4,078.56 = 1,761.31 : x
2. Step 2: Convert to fraction form
   2,955.50/4,078.56 = 1,761.31/x
3. Step 3: Cross multiply
   2,955.50x = 4,078.56 × 1,761.31
4. Step 4: Simplify right side
   2,955.50x = 7,183,608.51
5. Step 5: Solve for x
   x = 7,183,608.51/2,955.50
6. Step 6: Final answer
   x = 2,430.59