Finding the Fourth Proportional to 1,382.18, 1,907.36 and 752.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.18 : 1,907.36 = 752.68 : x
2. Step 2: Convert to fraction form
   1,382.18/1,907.36 = 752.68/x
3. Step 3: Cross multiply
   1,382.18x = 1,907.36 × 752.68
4. Step 4: Simplify right side
   1,382.18x = 1,435,631.72
5. Step 5: Solve for x
   x = 1,435,631.72/1,382.18
6. Step 6: Final answer
   x = 1,038.67