Finding the Fourth Proportional to 1,945.43, 2,917.94 and 775.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.43 : 2,917.94 = 775.59 : x
2. Step 2: Convert to fraction form
   1,945.43/2,917.94 = 775.59/x
3. Step 3: Cross multiply
   1,945.43x = 2,917.94 × 775.59
4. Step 4: Simplify right side
   1,945.43x = 2,263,127.02
5. Step 5: Solve for x
   x = 2,263,127.02/1,945.43
6. Step 6: Final answer
   x = 1,163.30