Finding the Fourth Proportional to 1,291.37, 1,938.27 and 675.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291.37 : 1,938.27 = 675.55 : x
2. Step 2: Convert to fraction form
   1,291.37/1,938.27 = 675.55/x
3. Step 3: Cross multiply
   1,291.37x = 1,938.27 × 675.55
4. Step 4: Simplify right side
   1,291.37x = 1,309,388.61
5. Step 5: Solve for x
   x = 1,309,388.61/1,291.37
6. Step 6: Final answer
   x = 1,013.95