Finding the Fourth Proportional to 1,291.55, 1,936.71 and 675.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291.55 : 1,936.71 = 675.54 : x
2. Step 2: Convert to fraction form
   1,291.55/1,936.71 = 675.54/x
3. Step 3: Cross multiply
   1,291.55x = 1,936.71 × 675.54
4. Step 4: Simplify right side
   1,291.55x = 1,308,325.07
5. Step 5: Solve for x
   x = 1,308,325.07/1,291.55
6. Step 6: Final answer
   x = 1,012.99