Finding the Fourth Proportional to 1,376.94, 2,062.17 and 1,086.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.94 : 2,062.17 = 1,086.42 : x
2. Step 2: Convert to fraction form
   1,376.94/2,062.17 = 1,086.42/x
3. Step 3: Cross multiply
   1,376.94x = 2,062.17 × 1,086.42
4. Step 4: Simplify right side
   1,376.94x = 2,240,382.73
5. Step 5: Solve for x
   x = 2,240,382.73/1,376.94
6. Step 6: Final answer
   x = 1,627.07