Finding the Fourth Proportional to 1,968.52, 2,715.81 and 1,128.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,968.52 : 2,715.81 = 1,128.93 : x
2. Step 2: Convert to fraction form
   1,968.52/2,715.81 = 1,128.93/x
3. Step 3: Cross multiply
   1,968.52x = 2,715.81 × 1,128.93
4. Step 4: Simplify right side
   1,968.52x = 3,065,959.38
5. Step 5: Solve for x
   x = 3,065,959.38/1,968.52
6. Step 6: Final answer
   x = 1,557.49