Finding the Fourth Proportional to 1,181.27, 1,629.59 and 917.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.27 : 1,629.59 = 917.48 : x
2. Step 2: Convert to fraction form
   1,181.27/1,629.59 = 917.48/x
3. Step 3: Cross multiply
   1,181.27x = 1,629.59 × 917.48
4. Step 4: Simplify right side
   1,181.27x = 1,495,103.50
5. Step 5: Solve for x
   x = 1,495,103.50/1,181.27
6. Step 6: Final answer
   x = 1,265.68