Finding the Fourth Proportional to 1,081.75, 1,493.32 and 633.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.75 : 1,493.32 = 633.56 : x
2. Step 2: Convert to fraction form
   1,081.75/1,493.32 = 633.56/x
3. Step 3: Cross multiply
   1,081.75x = 1,493.32 × 633.56
4. Step 4: Simplify right side
   1,081.75x = 946,109.54
5. Step 5: Solve for x
   x = 946,109.54/1,081.75
6. Step 6: Final answer
   x = 874.61