Finding the Fourth Proportional to 2,598.78, 3,898.86 and 1,365.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.78 : 3,898.86 = 1,365.84 : x
2. Step 2: Convert to fraction form
   2,598.78/3,898.86 = 1,365.84/x
3. Step 3: Cross multiply
   2,598.78x = 3,898.86 × 1,365.84
4. Step 4: Simplify right side
   2,598.78x = 5,325,218.94
5. Step 5: Solve for x
   x = 5,325,218.94/2,598.78
6. Step 6: Final answer
   x = 2,049.12