Finding the Fourth Proportional to 1,033.52, 1,426.23 and 561.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,033.52 : 1,426.23 = 561.40 : x
2. Step 2: Convert to fraction form
   1,033.52/1,426.23 = 561.40/x
3. Step 3: Cross multiply
   1,033.52x = 1,426.23 × 561.40
4. Step 4: Simplify right side
   1,033.52x = 800,681.96
5. Step 5: Solve for x
   x = 800,681.96/1,033.52
6. Step 6: Final answer
   x = 774.72