Finding the Fourth Proportional to 1,033.76, 1,426.57 and 591.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,033.76 : 1,426.57 = 591.64 : x
2. Step 2: Convert to fraction form
   1,033.76/1,426.57 = 591.64/x
3. Step 3: Cross multiply
   1,033.76x = 1,426.57 × 591.64
4. Step 4: Simplify right side
   1,033.76x = 844,010.83
5. Step 5: Solve for x
   x = 844,010.83/1,033.76
6. Step 6: Final answer
   x = 816.45