Finding the Fourth Proportional to 1,909.56, 2,862.72 and 756.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,909.56 : 2,862.72 = 756.12 : x
2. Step 2: Convert to fraction form
   1,909.56/2,862.72 = 756.12/x
3. Step 3: Cross multiply
   1,909.56x = 2,862.72 × 756.12
4. Step 4: Simplify right side
   1,909.56x = 2,164,559.85
5. Step 5: Solve for x
   x = 2,164,559.85/1,909.56
6. Step 6: Final answer
   x = 1,133.54