Finding the Fourth Proportional to 1,345.26, 1,856.25 and 755.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.26 : 1,856.25 = 755.69 : x
2. Step 2: Convert to fraction form
   1,345.26/1,856.25 = 755.69/x
3. Step 3: Cross multiply
   1,345.26x = 1,856.25 × 755.69
4. Step 4: Simplify right side
   1,345.26x = 1,402,743.12
5. Step 5: Solve for x
   x = 1,402,743.12/1,345.26
6. Step 6: Final answer
   x = 1,042.73