Finding the Fourth Proportional to 2,598.84, 3,898.50 and 867.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.84 : 3,898.50 = 867.72 : x
2. Step 2: Convert to fraction form
   2,598.84/3,898.50 = 867.72/x
3. Step 3: Cross multiply
   2,598.84x = 3,898.50 × 867.72
4. Step 4: Simplify right side
   2,598.84x = 3,382,806.42
5. Step 5: Solve for x
   x = 3,382,806.42/2,598.84
6. Step 6: Final answer
   x = 1,301.66