Finding the Fourth Proportional to 2,429.08, 3,644.12 and 1,389.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.08 : 3,644.12 = 1,389.58 : x
2. Step 2: Convert to fraction form
   2,429.08/3,644.12 = 1,389.58/x
3. Step 3: Cross multiply
   2,429.08x = 3,644.12 × 1,389.58
4. Step 4: Simplify right side
   2,429.08x = 5,063,796.27
5. Step 5: Solve for x
   x = 5,063,796.27/2,429.08
6. Step 6: Final answer
   x = 2,084.66