Finding the Fourth Proportional to 1,033.57, 1,426.40 and 591.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,033.57 : 1,426.40 = 591.61 : x
2. Step 2: Convert to fraction form
   1,033.57/1,426.40 = 591.61/x
3. Step 3: Cross multiply
   1,033.57x = 1,426.40 × 591.61
4. Step 4: Simplify right side
   1,033.57x = 843,869.55
5. Step 5: Solve for x
   x = 843,869.55/1,033.57
6. Step 6: Final answer
   x = 816.46