Finding the Fourth Proportional to 2,945.57, 4,415.72 and 1,095.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.57 : 4,415.72 = 1,095.39 : x
2. Step 2: Convert to fraction form
   2,945.57/4,415.72 = 1,095.39/x
3. Step 3: Cross multiply
   2,945.57x = 4,415.72 × 1,095.39
4. Step 4: Simplify right side
   2,945.57x = 4,836,930.05
5. Step 5: Solve for x
   x = 4,836,930.05/2,945.57
6. Step 6: Final answer
   x = 1,642.11