Finding the Fourth Proportional to 1,387.49, 1,914.73 and 758.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,387.49 : 1,914.73 = 758.03 : x
2. Step 2: Convert to fraction form
   1,387.49/1,914.73 = 758.03/x
3. Step 3: Cross multiply
   1,387.49x = 1,914.73 × 758.03
4. Step 4: Simplify right side
   1,387.49x = 1,451,411.31
5. Step 5: Solve for x
   x = 1,451,411.31/1,387.49
6. Step 6: Final answer
   x = 1,046.07