Finding the Fourth Proportional to 2,425.98, 3,635.73 and 1,328.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,425.98 : 3,635.73 = 1,328.70 : x
2. Step 2: Convert to fraction form
   2,425.98/3,635.73 = 1,328.70/x
3. Step 3: Cross multiply
   2,425.98x = 3,635.73 × 1,328.70
4. Step 4: Simplify right side
   2,425.98x = 4,830,794.45
5. Step 5: Solve for x
   x = 4,830,794.45/2,425.98
6. Step 6: Final answer
   x = 1,991.28