Finding the Fourth Proportional to 1,342.28, 1,850.72 and 1,155.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.28 : 1,850.72 = 1,155.44 : x
2. Step 2: Convert to fraction form
   1,342.28/1,850.72 = 1,155.44/x
3. Step 3: Cross multiply
   1,342.28x = 1,850.72 × 1,155.44
4. Step 4: Simplify right side
   1,342.28x = 2,138,380.89
5. Step 5: Solve for x
   x = 2,138,380.89/1,342.28
6. Step 6: Final answer
   x = 1,593.10