Finding the Fourth Proportional to 2,606.99, 3,597.64 and 1,428.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.99 : 3,597.64 = 1,428.10 : x
2. Step 2: Convert to fraction form
   2,606.99/3,597.64 = 1,428.10/x
3. Step 3: Cross multiply
   2,606.99x = 3,597.64 × 1,428.10
4. Step 4: Simplify right side
   2,606.99x = 5,137,771.70
5. Step 5: Solve for x
   x = 5,137,771.70/2,606.99
6. Step 6: Final answer
   x = 1,970.77