Finding the Fourth Proportional to 2,060.63, 2,843.61 and 1,209.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,060.63 : 2,843.61 = 1,209.87 : x
2. Step 2: Convert to fraction form
   2,060.63/2,843.61 = 1,209.87/x
3. Step 3: Cross multiply
   2,060.63x = 2,843.61 × 1,209.87
4. Step 4: Simplify right side
   2,060.63x = 3,440,391.96
5. Step 5: Solve for x
   x = 3,440,391.96/2,060.63
6. Step 6: Final answer
   x = 1,669.58