Finding the Fourth Proportional to 2,598.01, 3,898.31 and 1,211.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.01 : 3,898.31 = 1,211.45 : x
2. Step 2: Convert to fraction form
   2,598.01/3,898.31 = 1,211.45/x
3. Step 3: Cross multiply
   2,598.01x = 3,898.31 × 1,211.45
4. Step 4: Simplify right side
   2,598.01x = 4,722,620.42
5. Step 5: Solve for x
   x = 4,722,620.42/2,598.01
6. Step 6: Final answer
   x = 1,817.79