Finding the Fourth Proportional to 2,140.39, 2,953.75 and 1,208.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.39 : 2,953.75 = 1,208.89 : x
2. Step 2: Convert to fraction form
   2,140.39/2,953.75 = 1,208.89/x
3. Step 3: Cross multiply
   2,140.39x = 2,953.75 × 1,208.89
4. Step 4: Simplify right side
   2,140.39x = 3,570,741.05
5. Step 5: Solve for x
   x = 3,570,741.05/2,140.39
6. Step 6: Final answer
   x = 1,668.27