Finding the Fourth Proportional to 1,436.43, 1,981.35 and 994.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.43 : 1,981.35 = 994.17 : x
2. Step 2: Convert to fraction form
   1,436.43/1,981.35 = 994.17/x
3. Step 3: Cross multiply
   1,436.43x = 1,981.35 × 994.17
4. Step 4: Simplify right side
   1,436.43x = 1,969,798.73
5. Step 5: Solve for x
   x = 1,969,798.73/1,436.43
6. Step 6: Final answer
   x = 1,371.32