Finding the Fourth Proportional to 1,928.16, 2,660.24 and 1,181.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928.16 : 2,660.24 = 1,181.34 : x
2. Step 2: Convert to fraction form
   1,928.16/2,660.24 = 1,181.34/x
3. Step 3: Cross multiply
   1,928.16x = 2,660.24 × 1,181.34
4. Step 4: Simplify right side
   1,928.16x = 3,142,647.92
5. Step 5: Solve for x
   x = 3,142,647.92/1,928.16
6. Step 6: Final answer
   x = 1,629.87