Finding the Fourth Proportional to 2,710.14, 4,065.60 and 978.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,710.14 : 4,065.60 = 978.62 : x
2. Step 2: Convert to fraction form
   2,710.14/4,065.60 = 978.62/x
3. Step 3: Cross multiply
   2,710.14x = 4,065.60 × 978.62
4. Step 4: Simplify right side
   2,710.14x = 3,978,677.47
5. Step 5: Solve for x
   x = 3,978,677.47/2,710.14
6. Step 6: Final answer
   x = 1,468.07