Finding the Fourth Proportional to 2,428.98, 3,644.38 and 1,455.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.98 : 3,644.38 = 1,455.78 : x
2. Step 2: Convert to fraction form
   2,428.98/3,644.38 = 1,455.78/x
3. Step 3: Cross multiply
   2,428.98x = 3,644.38 × 1,455.78
4. Step 4: Simplify right side
   2,428.98x = 5,305,415.52
5. Step 5: Solve for x
   x = 5,305,415.52/2,428.98
6. Step 6: Final answer
   x = 2,184.22