Finding the Fourth Proportional to 1,381.89, 1,906.29 and 1,049.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.89 : 1,906.29 = 1,049.73 : x
2. Step 2: Convert to fraction form
   1,381.89/1,906.29 = 1,049.73/x
3. Step 3: Cross multiply
   1,381.89x = 1,906.29 × 1,049.73
4. Step 4: Simplify right side
   1,381.89x = 2,001,089.80
5. Step 5: Solve for x
   x = 2,001,089.80/1,381.89
6. Step 6: Final answer
   x = 1,448.08