Finding the Fourth Proportional to 1,345.43, 1,856.61 and 755.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.43 : 1,856.61 = 755.96 : x
2. Step 2: Convert to fraction form
   1,345.43/1,856.61 = 755.96/x
3. Step 3: Cross multiply
   1,345.43x = 1,856.61 × 755.96
4. Step 4: Simplify right side
   1,345.43x = 1,403,513.61
5. Step 5: Solve for x
   x = 1,403,513.61/1,345.43
6. Step 6: Final answer
   x = 1,043.17