Finding the Fourth Proportional to 1,081.98, 1,483.56 and 976.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.98 : 1,483.56 = 976.68 : x
2. Step 2: Convert to fraction form
   1,081.98/1,483.56 = 976.68/x
3. Step 3: Cross multiply
   1,081.98x = 1,483.56 × 976.68
4. Step 4: Simplify right side
   1,081.98x = 1,448,963.38
5. Step 5: Solve for x
   x = 1,448,963.38/1,081.98
6. Step 6: Final answer
   x = 1,339.18