Finding the Fourth Proportional to 1,007.52, 1,390.56 and 758.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007.52 : 1,390.56 = 758.46 : x
2. Step 2: Convert to fraction form
   1,007.52/1,390.56 = 758.46/x
3. Step 3: Cross multiply
   1,007.52x = 1,390.56 × 758.46
4. Step 4: Simplify right side
   1,007.52x = 1,054,684.14
5. Step 5: Solve for x
   x = 1,054,684.14/1,007.52
6. Step 6: Final answer
   x = 1,046.81