Finding the Fourth Proportional to 1,935.12, 2,904.73 and 1,205.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,935.12 : 2,904.73 = 1,205.21 : x
2. Step 2: Convert to fraction form
   1,935.12/2,904.73 = 1,205.21/x
3. Step 3: Cross multiply
   1,935.12x = 2,904.73 × 1,205.21
4. Step 4: Simplify right side
   1,935.12x = 3,500,813.89
5. Step 5: Solve for x
   x = 3,500,813.89/1,935.12
6. Step 6: Final answer
   x = 1,809.09