Finding the Fourth Proportional to 1,366.59, 1,882.60 and 1,086.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.59 : 1,882.60 = 1,086.74 : x
2. Step 2: Convert to fraction form
   1,366.59/1,882.60 = 1,086.74/x
3. Step 3: Cross multiply
   1,366.59x = 1,882.60 × 1,086.74
4. Step 4: Simplify right side
   1,366.59x = 2,045,896.72
5. Step 5: Solve for x
   x = 2,045,896.72/1,366.59
6. Step 6: Final answer
   x = 1,497.08