Finding the Fourth Proportional to 2,091.37, 3,133.26 and 978.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.37 : 3,133.26 = 978.73 : x
2. Step 2: Convert to fraction form
   2,091.37/3,133.26 = 978.73/x
3. Step 3: Cross multiply
   2,091.37x = 3,133.26 × 978.73
4. Step 4: Simplify right side
   2,091.37x = 3,066,615.56
5. Step 5: Solve for x
   x = 3,066,615.56/2,091.37
6. Step 6: Final answer
   x = 1,466.32