Finding the Fourth Proportional to 1,928.56, 2,662.06 and 1,201.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928.56 : 2,662.06 = 1,201.50 : x
2. Step 2: Convert to fraction form
   1,928.56/2,662.06 = 1,201.50/x
3. Step 3: Cross multiply
   1,928.56x = 2,662.06 × 1,201.50
4. Step 4: Simplify right side
   1,928.56x = 3,198,465.09
5. Step 5: Solve for x
   x = 3,198,465.09/1,928.56
6. Step 6: Final answer
   x = 1,658.47