Finding the Fourth Proportional to 1,033.56, 1,426.56 and 619.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,033.56 : 1,426.56 = 619.56 : x
2. Step 2: Convert to fraction form
   1,033.56/1,426.56 = 619.56/x
3. Step 3: Cross multiply
   1,033.56x = 1,426.56 × 619.56
4. Step 4: Simplify right side
   1,033.56x = 883,839.51
5. Step 5: Solve for x
   x = 883,839.51/1,033.56
6. Step 6: Final answer
   x = 855.14