Finding the Fourth Proportional to 1,445.50, 1,996.41 and 978.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.50 : 1,996.41 = 978.94 : x
2. Step 2: Convert to fraction form
   1,445.50/1,996.41 = 978.94/x
3. Step 3: Cross multiply
   1,445.50x = 1,996.41 × 978.94
4. Step 4: Simplify right side
   1,445.50x = 1,954,365.61
5. Step 5: Solve for x
   x = 1,954,365.61/1,445.50
6. Step 6: Final answer
   x = 1,352.03