Finding the Fourth Proportional to 1,673.80, 2,503.41 and 978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.80 : 2,503.41 = 978.82 : x
2. Step 2: Convert to fraction form
   1,673.80/2,503.41 = 978.82/x
3. Step 3: Cross multiply
   1,673.80x = 2,503.41 × 978.82
4. Step 4: Simplify right side
   1,673.80x = 2,450,387.78
5. Step 5: Solve for x
   x = 2,450,387.78/1,673.80
6. Step 6: Final answer
   x = 1,463.97