Finding the Fourth Proportional to 2,109.96, 3,160.20 and 1,015.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.96 : 3,160.20 = 1,015.08 : x
2. Step 2: Convert to fraction form
   2,109.96/3,160.20 = 1,015.08/x
3. Step 3: Cross multiply
   2,109.96x = 3,160.20 × 1,015.08
4. Step 4: Simplify right side
   2,109.96x = 3,207,855.82
5. Step 5: Solve for x
   x = 3,207,855.82/2,109.96
6. Step 6: Final answer
   x = 1,520.34