Finding the Fourth Proportional to 1,709.01, 2,563.56 and 978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,709.01 : 2,563.56 = 978.24 : x
2. Step 2: Convert to fraction form
   1,709.01/2,563.56 = 978.24/x
3. Step 3: Cross multiply
   1,709.01x = 2,563.56 × 978.24
4. Step 4: Simplify right side
   1,709.01x = 2,507,776.93
5. Step 5: Solve for x
   x = 2,507,776.93/1,709.01
6. Step 6: Final answer
   x = 1,467.39