Finding the Fourth Proportional to 1,436.56, 1,981.92 and 1,017.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.56 : 1,981.92 = 1,017.64 : x
2. Step 2: Convert to fraction form
   1,436.56/1,981.92 = 1,017.64/x
3. Step 3: Cross multiply
   1,436.56x = 1,981.92 × 1,017.64
4. Step 4: Simplify right side
   1,436.56x = 2,016,881.07
5. Step 5: Solve for x
   x = 2,016,881.07/1,436.56
6. Step 6: Final answer
   x = 1,403.97