Finding the Fourth Proportional to 1,345.46, 1,856.82 and 756.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.46 : 1,856.82 = 756.05 : x
2. Step 2: Convert to fraction form
   1,345.46/1,856.82 = 756.05/x
3. Step 3: Cross multiply
   1,345.46x = 1,856.82 × 756.05
4. Step 4: Simplify right side
   1,345.46x = 1,403,839.48
5. Step 5: Solve for x
   x = 1,403,839.48/1,345.46
6. Step 6: Final answer
   x = 1,043.39