Finding the Fourth Proportional to 2,107.50, 3,160.52 and 874.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.50 : 3,160.52 = 874.38 : x
2. Step 2: Convert to fraction form
   2,107.50/3,160.52 = 874.38/x
3. Step 3: Cross multiply
   2,107.50x = 3,160.52 × 874.38
4. Step 4: Simplify right side
   2,107.50x = 2,763,495.48
5. Step 5: Solve for x
   x = 2,763,495.48/2,107.50
6. Step 6: Final answer
   x = 1,311.27