Finding the Fourth Proportional to 1,711.08, 2,563.17 and 978.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,711.08 : 2,563.17 = 978.54 : x
2. Step 2: Convert to fraction form
   1,711.08/2,563.17 = 978.54/x
3. Step 3: Cross multiply
   1,711.08x = 2,563.17 × 978.54
4. Step 4: Simplify right side
   1,711.08x = 2,508,164.37
5. Step 5: Solve for x
   x = 2,508,164.37/1,711.08
6. Step 6: Final answer
   x = 1,465.84