Finding the Fourth Proportional to 2,159.03, 2,979.15 and 1,214.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159.03 : 2,979.15 = 1,214.69 : x
2. Step 2: Convert to fraction form
   2,159.03/2,979.15 = 1,214.69/x
3. Step 3: Cross multiply
   2,159.03x = 2,979.15 × 1,214.69
4. Step 4: Simplify right side
   2,159.03x = 3,618,728.82
5. Step 5: Solve for x
   x = 3,618,728.82/2,159.03
6. Step 6: Final answer
   x = 1,676.09