Finding the Fourth Proportional to 1,782.56, 2,673.72 and 756.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,782.56 : 2,673.72 = 756.56 : x
2. Step 2: Convert to fraction form
   1,782.56/2,673.72 = 756.56/x
3. Step 3: Cross multiply
   1,782.56x = 2,673.72 × 756.56
4. Step 4: Simplify right side
   1,782.56x = 2,022,829.60
5. Step 5: Solve for x
   x = 2,022,829.60/1,782.56
6. Step 6: Final answer
   x = 1,134.79