Finding the Fourth Proportional to 1,967.46, 2,715.27 and 1,128.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,967.46 : 2,715.27 = 1,128.43 : x
2. Step 2: Convert to fraction form
   1,967.46/2,715.27 = 1,128.43/x
3. Step 3: Cross multiply
   1,967.46x = 2,715.27 × 1,128.43
4. Step 4: Simplify right side
   1,967.46x = 3,063,986.48
5. Step 5: Solve for x
   x = 3,063,986.48/1,967.46
6. Step 6: Final answer
   x = 1,557.33