Finding the Fourth Proportional to 3,418.47, 4,715.42 and 2,158.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,418.47 : 4,715.42 = 2,158.52 : x
2. Step 2: Convert to fraction form
   3,418.47/4,715.42 = 2,158.52/x
3. Step 3: Cross multiply
   3,418.47x = 4,715.42 × 2,158.52
4. Step 4: Simplify right side
   3,418.47x = 10,178,294.01
5. Step 5: Solve for x
   x = 10,178,294.01/3,418.47
6. Step 6: Final answer
   x = 2,977.44