Finding the Fourth Proportional to 1,131.72, 1,697.52 and 481.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.72 : 1,697.52 = 481.98 : x
2. Step 2: Convert to fraction form
   1,131.72/1,697.52 = 481.98/x
3. Step 3: Cross multiply
   1,131.72x = 1,697.52 × 481.98
4. Step 4: Simplify right side
   1,131.72x = 818,170.69
5. Step 5: Solve for x
   x = 818,170.69/1,131.72
6. Step 6: Final answer
   x = 722.94