Finding the Fourth Proportional to 2,947.56, 4,418.72 and 1,097.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.56 : 4,418.72 = 1,097.40 : x
2. Step 2: Convert to fraction form
   2,947.56/4,418.72 = 1,097.40/x
3. Step 3: Cross multiply
   2,947.56x = 4,418.72 × 1,097.40
4. Step 4: Simplify right side
   2,947.56x = 4,849,103.33
5. Step 5: Solve for x
   x = 4,849,103.33/2,947.56
6. Step 6: Final answer
   x = 1,645.12