Finding the Fourth Proportional to 1,936.89, 2,672.04 and 1,190.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,936.89 : 2,672.04 = 1,190.55 : x
2. Step 2: Convert to fraction form
   1,936.89/2,672.04 = 1,190.55/x
3. Step 3: Cross multiply
   1,936.89x = 2,672.04 × 1,190.55
4. Step 4: Simplify right side
   1,936.89x = 3,181,197.22
5. Step 5: Solve for x
   x = 3,181,197.22/1,936.89
6. Step 6: Final answer
   x = 1,642.43