Finding the Fourth Proportional to 2,109.35, 3,164.93 and 1,013.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.35 : 3,164.93 = 1,013.15 : x
2. Step 2: Convert to fraction form
   2,109.35/3,164.93 = 1,013.15/x
3. Step 3: Cross multiply
   2,109.35x = 3,164.93 × 1,013.15
4. Step 4: Simplify right side
   2,109.35x = 3,206,548.83
5. Step 5: Solve for x
   x = 3,206,548.83/2,109.35
6. Step 6: Final answer
   x = 1,520.16