Finding the Fourth Proportional to 2,599.34, 3,898.16 and 867.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.34 : 3,898.16 = 867.50 : x
2. Step 2: Convert to fraction form
   2,599.34/3,898.16 = 867.50/x
3. Step 3: Cross multiply
   2,599.34x = 3,898.16 × 867.50
4. Step 4: Simplify right side
   2,599.34x = 3,381,653.80
5. Step 5: Solve for x
   x = 3,381,653.80/2,599.34
6. Step 6: Final answer
   x = 1,300.97