Finding the Fourth Proportional to 1,380.73, 1,905.42 and 751.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.73 : 1,905.42 = 751.27 : x
2. Step 2: Convert to fraction form
   1,380.73/1,905.42 = 751.27/x
3. Step 3: Cross multiply
   1,380.73x = 1,905.42 × 751.27
4. Step 4: Simplify right side
   1,380.73x = 1,431,484.88
5. Step 5: Solve for x
   x = 1,431,484.88/1,380.73
6. Step 6: Final answer
   x = 1,036.76