Finding the Fourth Proportional to 1,300.18, 1,940.75 and 1,128.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.18 : 1,940.75 = 1,128.04 : x
2. Step 2: Convert to fraction form
   1,300.18/1,940.75 = 1,128.04/x
3. Step 3: Cross multiply
   1,300.18x = 1,940.75 × 1,128.04
4. Step 4: Simplify right side
   1,300.18x = 2,189,243.63
5. Step 5: Solve for x
   x = 2,189,243.63/1,300.18
6. Step 6: Final answer
   x = 1,683.80