Finding the Fourth Proportional to 3,383.81, 5,075.33 and 918.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,383.81 : 5,075.33 = 918.82 : x
2. Step 2: Convert to fraction form
   3,383.81/5,075.33 = 918.82/x
3. Step 3: Cross multiply
   3,383.81x = 5,075.33 × 918.82
4. Step 4: Simplify right side
   3,383.81x = 4,663,297.43
5. Step 5: Solve for x
   x = 4,663,297.43/3,383.81
6. Step 6: Final answer
   x = 1,378.12