Finding the Fourth Proportional to 2,172.02, 2,996.60 and 1,426.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.02 : 2,996.60 = 1,426.38 : x
2. Step 2: Convert to fraction form
   2,172.02/2,996.60 = 1,426.38/x
3. Step 3: Cross multiply
   2,172.02x = 2,996.60 × 1,426.38
4. Step 4: Simplify right side
   2,172.02x = 4,274,271.94
5. Step 5: Solve for x
   x = 4,274,271.94/2,172.02
6. Step 6: Final answer
   x = 1,967.88