Finding the Fourth Proportional to 2,598.86, 3,898.43 and 1,299.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.86 : 3,898.43 = 1,299.89 : x
2. Step 2: Convert to fraction form
   2,598.86/3,898.43 = 1,299.89/x
3. Step 3: Cross multiply
   2,598.86x = 3,898.43 × 1,299.89
4. Step 4: Simplify right side
   2,598.86x = 5,067,523.67
5. Step 5: Solve for x
   x = 5,067,523.67/2,598.86
6. Step 6: Final answer
   x = 1,949.90