Finding the Fourth Proportional to 1,345.96, 1,857.42 and 756.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.96 : 1,857.42 = 756.50 : x
2. Step 2: Convert to fraction form
   1,345.96/1,857.42 = 756.50/x
3. Step 3: Cross multiply
   1,345.96x = 1,857.42 × 756.50
4. Step 4: Simplify right side
   1,345.96x = 1,405,128.94
5. Step 5: Solve for x
   x = 1,405,128.94/1,345.96
6. Step 6: Final answer
   x = 1,043.96