Finding the Fourth Proportional to 2,852.72, 4,278.42 and 1,097.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,852.72 : 4,278.42 = 1,097.15 : x
2. Step 2: Convert to fraction form
   2,852.72/4,278.42 = 1,097.15/x
3. Step 3: Cross multiply
   2,852.72x = 4,278.42 × 1,097.15
4. Step 4: Simplify right side
   2,852.72x = 4,694,047.11
5. Step 5: Solve for x
   x = 4,694,047.11/2,852.72
6. Step 6: Final answer
   x = 1,645.46