Finding the Fourth Proportional to 1,548.47, 2,136.78 and 885.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,548.47 : 2,136.78 = 885.56 : x
2. Step 2: Convert to fraction form
   1,548.47/2,136.78 = 885.56/x
3. Step 3: Cross multiply
   1,548.47x = 2,136.78 × 885.56
4. Step 4: Simplify right side
   1,548.47x = 1,892,246.90
5. Step 5: Solve for x
   x = 1,892,246.90/1,548.47
6. Step 6: Final answer
   x = 1,222.01