Finding the Fourth Proportional to 1,954.80, 2,928.42 and 1,086.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,954.80 : 2,928.42 = 1,086.48 : x
2. Step 2: Convert to fraction form
   1,954.80/2,928.42 = 1,086.48/x
3. Step 3: Cross multiply
   1,954.80x = 2,928.42 × 1,086.48
4. Step 4: Simplify right side
   1,954.80x = 3,181,669.76
5. Step 5: Solve for x
   x = 3,181,669.76/1,954.80
6. Step 6: Final answer
   x = 1,627.62