Finding the Fourth Proportional to 1,057.58, 1,459.48 and 591.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057.58 : 1,459.48 = 591.83 : x
2. Step 2: Convert to fraction form
   1,057.58/1,459.48 = 591.83/x
3. Step 3: Cross multiply
   1,057.58x = 1,459.48 × 591.83
4. Step 4: Simplify right side
   1,057.58x = 863,758.23
5. Step 5: Solve for x
   x = 863,758.23/1,057.58
6. Step 6: Final answer
   x = 816.73