Finding the Fourth Proportional to 1,092.52, 1,636.98 and 979.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.52 : 1,636.98 = 979.60 : x
2. Step 2: Convert to fraction form
   1,092.52/1,636.98 = 979.60/x
3. Step 3: Cross multiply
   1,092.52x = 1,636.98 × 979.60
4. Step 4: Simplify right side
   1,092.52x = 1,603,585.61
5. Step 5: Solve for x
   x = 1,603,585.61/1,092.52
6. Step 6: Final answer
   x = 1,467.79