Finding the Fourth Proportional to 1,436.68, 1,982.70 and 1,086.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.68 : 1,982.70 = 1,086.76 : x
2. Step 2: Convert to fraction form
   1,436.68/1,982.70 = 1,086.76/x
3. Step 3: Cross multiply
   1,436.68x = 1,982.70 × 1,086.76
4. Step 4: Simplify right side
   1,436.68x = 2,154,719.05
5. Step 5: Solve for x
   x = 2,154,719.05/1,436.68
6. Step 6: Final answer
   x = 1,499.79