Finding the Fourth Proportional to 1,945.72, 2,685 and 1,061.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.72 : 2,685 = 1,061.47 : x
2. Step 2: Convert to fraction form
   1,945.72/2,685 = 1,061.47/x
3. Step 3: Cross multiply
   1,945.72x = 2,685 × 1,061.47
4. Step 4: Simplify right side
   1,945.72x = 2,850,046.95
5. Step 5: Solve for x
   x = 2,850,046.95/1,945.72
6. Step 6: Final answer
   x = 1,464.78