Finding the Fourth Proportional to 2,144.56, 2,959.56 and 1,213

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.56 : 2,959.56 = 1,213 : x
2. Step 2: Convert to fraction form
   2,144.56/2,959.56 = 1,213/x
3. Step 3: Cross multiply
   2,144.56x = 2,959.56 × 1,213
4. Step 4: Simplify right side
   2,144.56x = 3,589,946.28
5. Step 5: Solve for x
   x = 3,589,946.28/2,144.56
6. Step 6: Final answer
   x = 1,673.98