Finding the Fourth Proportional to 1,011.45, 1,395.32 and 591.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.45 : 1,395.32 = 591.82 : x
2. Step 2: Convert to fraction form
   1,011.45/1,395.32 = 591.82/x
3. Step 3: Cross multiply
   1,011.45x = 1,395.32 × 591.82
4. Step 4: Simplify right side
   1,011.45x = 825,771.31
5. Step 5: Solve for x
   x = 825,771.31/1,011.45
6. Step 6: Final answer
   x = 816.42