Finding the Fourth Proportional to 2,019.56, 3,029.63 and 978.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.56 : 3,029.63 = 978.70 : x
2. Step 2: Convert to fraction form
   2,019.56/3,029.63 = 978.70/x
3. Step 3: Cross multiply
   2,019.56x = 3,029.63 × 978.70
4. Step 4: Simplify right side
   2,019.56x = 2,965,098.88
5. Step 5: Solve for x
   x = 2,965,098.88/2,019.56
6. Step 6: Final answer
   x = 1,468.19