Finding the Fourth Proportional to 1,382.66, 1,905.87 and 1,087.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.66 : 1,905.87 = 1,087.54 : x
2. Step 2: Convert to fraction form
   1,382.66/1,905.87 = 1,087.54/x
3. Step 3: Cross multiply
   1,382.66x = 1,905.87 × 1,087.54
4. Step 4: Simplify right side
   1,382.66x = 2,072,709.86
5. Step 5: Solve for x
   x = 2,072,709.86/1,382.66
6. Step 6: Final answer
   x = 1,499.07