Finding the Fourth Proportional to 1,661.31, 2,491.83 and 967.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.31 : 2,491.83 = 967.55 : x
2. Step 2: Convert to fraction form
   1,661.31/2,491.83 = 967.55/x
3. Step 3: Cross multiply
   1,661.31x = 2,491.83 × 967.55
4. Step 4: Simplify right side
   1,661.31x = 2,410,957.66
5. Step 5: Solve for x
   x = 2,410,957.66/1,661.31
6. Step 6: Final answer
   x = 1,451.24