Finding the Fourth Proportional to 2,287.04, 3,156.12 and 1,355.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.04 : 3,156.12 = 1,355.52 : x
2. Step 2: Convert to fraction form
   2,287.04/3,156.12 = 1,355.52/x
3. Step 3: Cross multiply
   2,287.04x = 3,156.12 × 1,355.52
4. Step 4: Simplify right side
   2,287.04x = 4,278,183.78
5. Step 5: Solve for x
   x = 4,278,183.78/2,287.04
6. Step 6: Final answer
   x = 1,870.62