Finding the Fourth Proportional to 1,673.74, 2,508.32 and 978.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.74 : 2,508.32 = 978.94 : x
2. Step 2: Convert to fraction form
   1,673.74/2,508.32 = 978.94/x
3. Step 3: Cross multiply
   1,673.74x = 2,508.32 × 978.94
4. Step 4: Simplify right side
   1,673.74x = 2,455,494.78
5. Step 5: Solve for x
   x = 2,455,494.78/1,673.74
6. Step 6: Final answer
   x = 1,467.07