Finding the Fourth Proportional to 2,606.96, 3,597.60 and 1,428.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.96 : 3,597.60 = 1,428.04 : x
2. Step 2: Convert to fraction form
   2,606.96/3,597.60 = 1,428.04/x
3. Step 3: Cross multiply
   2,606.96x = 3,597.60 × 1,428.04
4. Step 4: Simplify right side
   2,606.96x = 5,137,516.70
5. Step 5: Solve for x
   x = 5,137,516.70/2,606.96
6. Step 6: Final answer
   x = 1,970.69