Finding the Fourth Proportional to 1,648.49, 2,473.16 and 1,214.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.49 : 2,473.16 = 1,214.91 : x
2. Step 2: Convert to fraction form
   1,648.49/2,473.16 = 1,214.91/x
3. Step 3: Cross multiply
   1,648.49x = 2,473.16 × 1,214.91
4. Step 4: Simplify right side
   1,648.49x = 3,004,664.89
5. Step 5: Solve for x
   x = 3,004,664.89/1,648.49
6. Step 6: Final answer
   x = 1,822.68