Finding the Fourth Proportional to 1,371.89, 1,895.85 and 1,039.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.89 : 1,895.85 = 1,039.73 : x
2. Step 2: Convert to fraction form
   1,371.89/1,895.85 = 1,039.73/x
3. Step 3: Cross multiply
   1,371.89x = 1,895.85 × 1,039.73
4. Step 4: Simplify right side
   1,371.89x = 1,971,162.64
5. Step 5: Solve for x
   x = 1,971,162.64/1,371.89
6. Step 6: Final answer
   x = 1,436.82