Finding the Fourth Proportional to 1,429.57, 1,974.15 and 1,351.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.57 : 1,974.15 = 1,351.92 : x
2. Step 2: Convert to fraction form
   1,429.57/1,974.15 = 1,351.92/x
3. Step 3: Cross multiply
   1,429.57x = 1,974.15 × 1,351.92
4. Step 4: Simplify right side
   1,429.57x = 2,668,892.87
5. Step 5: Solve for x
   x = 2,668,892.87/1,429.57
6. Step 6: Final answer
   x = 1,866.92