Finding the Fourth Proportional to 1,995.34, 2,752.80 and 1,209.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,995.34 : 2,752.80 = 1,209.10 : x
2. Step 2: Convert to fraction form
   1,995.34/2,752.80 = 1,209.10/x
3. Step 3: Cross multiply
   1,995.34x = 2,752.80 × 1,209.10
4. Step 4: Simplify right side
   1,995.34x = 3,328,410.48
5. Step 5: Solve for x
   x = 3,328,410.48/1,995.34
6. Step 6: Final answer
   x = 1,668.09