Finding the Fourth Proportional to 1,092.76, 1,638.45 and 606.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.76 : 1,638.45 = 606.15 : x
2. Step 2: Convert to fraction form
   1,092.76/1,638.45 = 606.15/x
3. Step 3: Cross multiply
   1,092.76x = 1,638.45 × 606.15
4. Step 4: Simplify right side
   1,092.76x = 993,146.47
5. Step 5: Solve for x
   x = 993,146.47/1,092.76
6. Step 6: Final answer
   x = 908.84