Finding the Fourth Proportional to 2,606.95, 3,597.59 and 1,428.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.95 : 3,597.59 = 1,428.09 : x
2. Step 2: Convert to fraction form
   2,606.95/3,597.59 = 1,428.09/x
3. Step 3: Cross multiply
   2,606.95x = 3,597.59 × 1,428.09
4. Step 4: Simplify right side
   2,606.95x = 5,137,682.30
5. Step 5: Solve for x
   x = 5,137,682.30/2,606.95
6. Step 6: Final answer
   x = 1,970.76