Finding the Fourth Proportional to 1,315.32, 1,815.41 and 756.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,315.32 : 1,815.41 = 756.17 : x
2. Step 2: Convert to fraction form
   1,315.32/1,815.41 = 756.17/x
3. Step 3: Cross multiply
   1,315.32x = 1,815.41 × 756.17
4. Step 4: Simplify right side
   1,315.32x = 1,372,745.72
5. Step 5: Solve for x
   x = 1,372,745.72/1,315.32
6. Step 6: Final answer
   x = 1,043.66