Finding the Fourth Proportional to 1,967.54, 2,715.37 and 1,128.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,967.54 : 2,715.37 = 1,128.35 : x
2. Step 2: Convert to fraction form
   1,967.54/2,715.37 = 1,128.35/x
3. Step 3: Cross multiply
   1,967.54x = 2,715.37 × 1,128.35
4. Step 4: Simplify right side
   1,967.54x = 3,063,891.71
5. Step 5: Solve for x
   x = 3,063,891.71/1,967.54
6. Step 6: Final answer
   x = 1,557.22