Finding the Fourth Proportional to 1,647.42, 2,271.51 and 1,314.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.42 : 2,271.51 = 1,314.78 : x
2. Step 2: Convert to fraction form
   1,647.42/2,271.51 = 1,314.78/x
3. Step 3: Cross multiply
   1,647.42x = 2,271.51 × 1,314.78
4. Step 4: Simplify right side
   1,647.42x = 2,986,535.92
5. Step 5: Solve for x
   x = 2,986,535.92/1,647.42
6. Step 6: Final answer
   x = 1,812.86