Finding the Fourth Proportional to 1,436.52, 1,982.10 and 912.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.52 : 1,982.10 = 912.36 : x
2. Step 2: Convert to fraction form
   1,436.52/1,982.10 = 912.36/x
3. Step 3: Cross multiply
   1,436.52x = 1,982.10 × 912.36
4. Step 4: Simplify right side
   1,436.52x = 1,808,388.76
5. Step 5: Solve for x
   x = 1,808,388.76/1,436.52
6. Step 6: Final answer
   x = 1,258.87