Finding the Fourth Proportional to 2,112.30, 3,166.87 and 1,015.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.30 : 3,166.87 = 1,015.62 : x
2. Step 2: Convert to fraction form
   2,112.30/3,166.87 = 1,015.62/x
3. Step 3: Cross multiply
   2,112.30x = 3,166.87 × 1,015.62
4. Step 4: Simplify right side
   2,112.30x = 3,216,336.51
5. Step 5: Solve for x
   x = 3,216,336.51/2,112.30
6. Step 6: Final answer
   x = 1,522.67