Finding the Fourth Proportional to 1,945.72, 2,685.42 and 1,160.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.72 : 2,685.42 = 1,160.04 : x
2. Step 2: Convert to fraction form
   1,945.72/2,685.42 = 1,160.04/x
3. Step 3: Cross multiply
   1,945.72x = 2,685.42 × 1,160.04
4. Step 4: Simplify right side
   1,945.72x = 3,115,194.62
5. Step 5: Solve for x
   x = 3,115,194.62/1,945.72
6. Step 6: Final answer
   x = 1,601.05