Finding the Fourth Proportional to 1,345.92, 1,857.38 and 756.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.92 : 1,857.38 = 756.46 : x
2. Step 2: Convert to fraction form
   1,345.92/1,857.38 = 756.46/x
3. Step 3: Cross multiply
   1,345.92x = 1,857.38 × 756.46
4. Step 4: Simplify right side
   1,345.92x = 1,405,033.67
5. Step 5: Solve for x
   x = 1,405,033.67/1,345.92
6. Step 6: Final answer
   x = 1,043.92