Finding the Fourth Proportional to 2,423.32, 3,638.12 and 2,078.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,423.32 : 3,638.12 = 2,078.87 : x
2. Step 2: Convert to fraction form
   2,423.32/3,638.12 = 2,078.87/x
3. Step 3: Cross multiply
   2,423.32x = 3,638.12 × 2,078.87
4. Step 4: Simplify right side
   2,423.32x = 7,563,149.94
5. Step 5: Solve for x
   x = 7,563,149.94/2,423.32
6. Step 6: Final answer
   x = 3,120.99