Finding the Fourth Proportional to 2,148.16, 2,964.71 and 1,204.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.16 : 2,964.71 = 1,204.21 : x
2. Step 2: Convert to fraction form
   2,148.16/2,964.71 = 1,204.21/x
3. Step 3: Cross multiply
   2,148.16x = 2,964.71 × 1,204.21
4. Step 4: Simplify right side
   2,148.16x = 3,570,112.58
5. Step 5: Solve for x
   x = 3,570,112.58/2,148.16
6. Step 6: Final answer
   x = 1,661.94