Finding the Fourth Proportional to 3,598.71, 5,398.87 and 1,408.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,598.71 : 5,398.87 = 1,408.06 : x
2. Step 2: Convert to fraction form
   3,598.71/5,398.87 = 1,408.06/x
3. Step 3: Cross multiply
   3,598.71x = 5,398.87 × 1,408.06
4. Step 4: Simplify right side
   3,598.71x = 7,601,932.89
5. Step 5: Solve for x
   x = 7,601,932.89/3,598.71
6. Step 6: Final answer
   x = 2,112.40