Finding the Fourth Proportional to 2,087.48, 3,132.12 and 1,112.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.48 : 3,132.12 = 1,112.42 : x
2. Step 2: Convert to fraction form
   2,087.48/3,132.12 = 1,112.42/x
3. Step 3: Cross multiply
   2,087.48x = 3,132.12 × 1,112.42
4. Step 4: Simplify right side
   2,087.48x = 3,484,232.93
5. Step 5: Solve for x
   x = 3,484,232.93/2,087.48
6. Step 6: Final answer
   x = 1,669.11