Finding the Fourth Proportional to 2,048.86, 2,827.41 and 1,209.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.86 : 2,827.41 = 1,209.60 : x
2. Step 2: Convert to fraction form
   2,048.86/2,827.41 = 1,209.60/x
3. Step 3: Cross multiply
   2,048.86x = 2,827.41 × 1,209.60
4. Step 4: Simplify right side
   2,048.86x = 3,420,030.60
5. Step 5: Solve for x
   x = 3,420,030.60/2,048.86
6. Step 6: Final answer
   x = 1,669.23