Finding the Fourth Proportional to 1,015.50, 1,401.54 and 595.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.50 : 1,401.54 = 595.89 : x
2. Step 2: Convert to fraction form
   1,015.50/1,401.54 = 595.89/x
3. Step 3: Cross multiply
   1,015.50x = 1,401.54 × 595.89
4. Step 4: Simplify right side
   1,015.50x = 835,163.67
5. Step 5: Solve for x
   x = 835,163.67/1,015.50
6. Step 6: Final answer
   x = 822.42