Finding the Fourth Proportional to 2,598.54, 3,898.32 and 843.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.54 : 3,898.32 = 843.99 : x
2. Step 2: Convert to fraction form
   2,598.54/3,898.32 = 843.99/x
3. Step 3: Cross multiply
   2,598.54x = 3,898.32 × 843.99
4. Step 4: Simplify right side
   2,598.54x = 3,290,143.10
5. Step 5: Solve for x
   x = 3,290,143.10/2,598.54
6. Step 6: Final answer
   x = 1,266.15