Finding the Fourth Proportional to 1,671.08, 2,506.37 and 978.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,671.08 : 2,506.37 = 978.10 : x
2. Step 2: Convert to fraction form
   1,671.08/2,506.37 = 978.10/x
3. Step 3: Cross multiply
   1,671.08x = 2,506.37 × 978.10
4. Step 4: Simplify right side
   1,671.08x = 2,451,480.50
5. Step 5: Solve for x
   x = 2,451,480.50/1,671.08
6. Step 6: Final answer
   x = 1,467.00