Finding the Fourth Proportional to 1,424.17, 2,125.46 and 1,387.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.17 : 2,125.46 = 1,387.27 : x
2. Step 2: Convert to fraction form
   1,424.17/2,125.46 = 1,387.27/x
3. Step 3: Cross multiply
   1,424.17x = 2,125.46 × 1,387.27
4. Step 4: Simplify right side
   1,424.17x = 2,948,586.89
5. Step 5: Solve for x
   x = 2,948,586.89/1,424.17
6. Step 6: Final answer
   x = 2,070.39