Finding the Fourth Proportional to 1,707.52, 2,563.72 and 978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,707.52 : 2,563.72 = 978.52 : x
2. Step 2: Convert to fraction form
   1,707.52/2,563.72 = 978.52/x
3. Step 3: Cross multiply
   1,707.52x = 2,563.72 × 978.52
4. Step 4: Simplify right side
   1,707.52x = 2,508,651.29
5. Step 5: Solve for x
   x = 2,508,651.29/1,707.52
6. Step 6: Final answer
   x = 1,469.18