Finding the Fourth Proportional to 1,969.08, 2,718.59 and 1,224.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.08 : 2,718.59 = 1,224.12 : x
2. Step 2: Convert to fraction form
   1,969.08/2,718.59 = 1,224.12/x
3. Step 3: Cross multiply
   1,969.08x = 2,718.59 × 1,224.12
4. Step 4: Simplify right side
   1,969.08x = 3,327,874.27
5. Step 5: Solve for x
   x = 3,327,874.27/1,969.08
6. Step 6: Final answer
   x = 1,690.07