Finding the Fourth Proportional to 1,131.78, 1,697.52 and 482.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.78 : 1,697.52 = 482.42 : x
2. Step 2: Convert to fraction form
   1,131.78/1,697.52 = 482.42/x
3. Step 3: Cross multiply
   1,131.78x = 1,697.52 × 482.42
4. Step 4: Simplify right side
   1,131.78x = 818,917.60
5. Step 5: Solve for x
   x = 818,917.60/1,131.78
6. Step 6: Final answer
   x = 723.57