Finding the Fourth Proportional to 1,382.19, 1,907.43 and 752.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.19 : 1,907.43 = 752.72 : x
2. Step 2: Convert to fraction form
   1,382.19/1,907.43 = 752.72/x
3. Step 3: Cross multiply
   1,382.19x = 1,907.43 × 752.72
4. Step 4: Simplify right side
   1,382.19x = 1,435,763.31
5. Step 5: Solve for x
   x = 1,435,763.31/1,382.19
6. Step 6: Final answer
   x = 1,038.76