Finding the Fourth Proportional to 1,033.63, 1,426.41 and 561.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,033.63 : 1,426.41 = 561.53 : x
2. Step 2: Convert to fraction form
   1,033.63/1,426.41 = 561.53/x
3. Step 3: Cross multiply
   1,033.63x = 1,426.41 × 561.53
4. Step 4: Simplify right side
   1,033.63x = 800,964.88
5. Step 5: Solve for x
   x = 800,964.88/1,033.63
6. Step 6: Final answer
   x = 774.91