Finding the Fourth Proportional to 1,345.46, 1,856.63 and 755.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.46 : 1,856.63 = 755.89 : x
2. Step 2: Convert to fraction form
   1,345.46/1,856.63 = 755.89/x
3. Step 3: Cross multiply
   1,345.46x = 1,856.63 × 755.89
4. Step 4: Simplify right side
   1,345.46x = 1,403,405.30
5. Step 5: Solve for x
   x = 1,403,405.30/1,345.46
6. Step 6: Final answer
   x = 1,043.07