Finding the Fourth Proportional to 1,548.69, 2,137.17 and 885.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,548.69 : 2,137.17 = 885.51 : x
2. Step 2: Convert to fraction form
   1,548.69/2,137.17 = 885.51/x
3. Step 3: Cross multiply
   1,548.69x = 2,137.17 × 885.51
4. Step 4: Simplify right side
   1,548.69x = 1,892,485.41
5. Step 5: Solve for x
   x = 1,892,485.41/1,548.69
6. Step 6: Final answer
   x = 1,221.99