Finding the Fourth Proportional to 2,097.63, 3,152.21 and 1,278.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.63 : 3,152.21 = 1,278.27 : x
2. Step 2: Convert to fraction form
   2,097.63/3,152.21 = 1,278.27/x
3. Step 3: Cross multiply
   2,097.63x = 3,152.21 × 1,278.27
4. Step 4: Simplify right side
   2,097.63x = 4,029,369.09
5. Step 5: Solve for x
   x = 4,029,369.09/2,097.63
6. Step 6: Final answer
   x = 1,920.92