Finding the Fourth Proportional to 2,143.80, 2,956.50 and 1,356.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.80 : 2,956.50 = 1,356.48 : x
2. Step 2: Convert to fraction form
   2,143.80/2,956.50 = 1,356.48/x
3. Step 3: Cross multiply
   2,143.80x = 2,956.50 × 1,356.48
4. Step 4: Simplify right side
   2,143.80x = 4,010,433.12
5. Step 5: Solve for x
   x = 4,010,433.12/2,143.80
6. Step 6: Final answer
   x = 1,870.71