Finding the Fourth Proportional to 1,296.51, 1,789.46 and 854.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.51 : 1,789.46 = 854.45 : x
2. Step 2: Convert to fraction form
   1,296.51/1,789.46 = 854.45/x
3. Step 3: Cross multiply
   1,296.51x = 1,789.46 × 854.45
4. Step 4: Simplify right side
   1,296.51x = 1,529,004.10
5. Step 5: Solve for x
   x = 1,529,004.10/1,296.51
6. Step 6: Final answer
   x = 1,179.32