Finding the Fourth Proportional to 1,345.34, 1,856.56 and 755.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.34 : 1,856.56 = 755.86 : x
2. Step 2: Convert to fraction form
   1,345.34/1,856.56 = 755.86/x
3. Step 3: Cross multiply
   1,345.34x = 1,856.56 × 755.86
4. Step 4: Simplify right side
   1,345.34x = 1,403,299.44
5. Step 5: Solve for x
   x = 1,403,299.44/1,345.34
6. Step 6: Final answer
   x = 1,043.08