Finding the Fourth Proportional to 2,048.30, 2,826.63 and 1,209

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.30 : 2,826.63 = 1,209 : x
2. Step 2: Convert to fraction form
   2,048.30/2,826.63 = 1,209/x
3. Step 3: Cross multiply
   2,048.30x = 2,826.63 × 1,209
4. Step 4: Simplify right side
   2,048.30x = 3,417,395.67
5. Step 5: Solve for x
   x = 3,417,395.67/2,048.30
6. Step 6: Final answer
   x = 1,668.41