Finding the Fourth Proportional to 2,620.77, 3,616.49 and 1,425.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.77 : 3,616.49 = 1,425.74 : x
2. Step 2: Convert to fraction form
   2,620.77/3,616.49 = 1,425.74/x
3. Step 3: Cross multiply
   2,620.77x = 3,616.49 × 1,425.74
4. Step 4: Simplify right side
   2,620.77x = 5,156,174.45
5. Step 5: Solve for x
   x = 5,156,174.45/2,620.77
6. Step 6: Final answer
   x = 1,967.43