Finding the Fourth Proportional to 1,926.72, 2,658.51 and 1,180.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.72 : 2,658.51 = 1,180.80 : x
2. Step 2: Convert to fraction form
   1,926.72/2,658.51 = 1,180.80/x
3. Step 3: Cross multiply
   1,926.72x = 2,658.51 × 1,180.80
4. Step 4: Simplify right side
   1,926.72x = 3,139,168.61
5. Step 5: Solve for x
   x = 3,139,168.61/1,926.72
6. Step 6: Final answer
   x = 1,629.28