Finding the Fourth Proportional to 2,127.42, 3,187.46 and 1,154.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.42 : 3,187.46 = 1,154.20 : x
2. Step 2: Convert to fraction form
   2,127.42/3,187.46 = 1,154.20/x
3. Step 3: Cross multiply
   2,127.42x = 3,187.46 × 1,154.20
4. Step 4: Simplify right side
   2,127.42x = 3,678,966.33
5. Step 5: Solve for x
   x = 3,678,966.33/2,127.42
6. Step 6: Final answer
   x = 1,729.31