Finding the Fourth Proportional to 1,007.27, 1,389.31 and 758.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007.27 : 1,389.31 = 758.16 : x
2. Step 2: Convert to fraction form
   1,007.27/1,389.31 = 758.16/x
3. Step 3: Cross multiply
   1,007.27x = 1,389.31 × 758.16
4. Step 4: Simplify right side
   1,007.27x = 1,053,322.71
5. Step 5: Solve for x
   x = 1,053,322.71/1,007.27
6. Step 6: Final answer
   x = 1,045.72