Finding the Fourth Proportional to 1,676.62, 2,314.12 and 978.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,676.62 : 2,314.12 = 978.14 : x
2. Step 2: Convert to fraction form
   1,676.62/2,314.12 = 978.14/x
3. Step 3: Cross multiply
   1,676.62x = 2,314.12 × 978.14
4. Step 4: Simplify right side
   1,676.62x = 2,263,533.34
5. Step 5: Solve for x
   x = 2,263,533.34/1,676.62
6. Step 6: Final answer
   x = 1,350.06