Finding the Fourth Proportional to 1,382.56, 1,907.82 and 761.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.56 : 1,907.82 = 761.56 : x
2. Step 2: Convert to fraction form
   1,382.56/1,907.82 = 761.56/x
3. Step 3: Cross multiply
   1,382.56x = 1,907.82 × 761.56
4. Step 4: Simplify right side
   1,382.56x = 1,452,919.40
5. Step 5: Solve for x
   x = 1,452,919.40/1,382.56
6. Step 6: Final answer
   x = 1,050.89