Finding the Fourth Proportional to 1,548.73, 2,136.72 and 989.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,548.73 : 2,136.72 = 989.52 : x
2. Step 2: Convert to fraction form
   1,548.73/2,136.72 = 989.52/x
3. Step 3: Cross multiply
   1,548.73x = 2,136.72 × 989.52
4. Step 4: Simplify right side
   1,548.73x = 2,114,329.33
5. Step 5: Solve for x
   x = 2,114,329.33/1,548.73
6. Step 6: Final answer
   x = 1,365.21