Finding the Fourth Proportional to 2,285.72, 3,154.41 and 1,291.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.72 : 3,154.41 = 1,291.04 : x
2. Step 2: Convert to fraction form
   2,285.72/3,154.41 = 1,291.04/x
3. Step 3: Cross multiply
   2,285.72x = 3,154.41 × 1,291.04
4. Step 4: Simplify right side
   2,285.72x = 4,072,453.71
5. Step 5: Solve for x
   x = 4,072,453.71/2,285.72
6. Step 6: Final answer
   x = 1,781.70