Finding the Fourth Proportional to 2,593.50, 3,890.34 and 862.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,593.50 : 3,890.34 = 862.08 : x
2. Step 2: Convert to fraction form
   2,593.50/3,890.34 = 862.08/x
3. Step 3: Cross multiply
   2,593.50x = 3,890.34 × 862.08
4. Step 4: Simplify right side
   2,593.50x = 3,353,784.31
5. Step 5: Solve for x
   x = 3,353,784.31/2,593.50
6. Step 6: Final answer
   x = 1,293.15