Finding the Fourth Proportional to 1,345.92, 1,857.48 and 756.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.92 : 1,857.48 = 756.38 : x
2. Step 2: Convert to fraction form
   1,345.92/1,857.48 = 756.38/x
3. Step 3: Cross multiply
   1,345.92x = 1,857.48 × 756.38
4. Step 4: Simplify right side
   1,345.92x = 1,404,960.72
5. Step 5: Solve for x
   x = 1,404,960.72/1,345.92
6. Step 6: Final answer
   x = 1,043.87