Finding the Fourth Proportional to 789,959.48, 1,185,062.10 and 257,356.52

Step by Step Solution

1. Step 1: Write the proportion equation
   789,959.48 : 1,185,062.10 = 257,356.52 : x
2. Step 2: Convert to fraction form
   789,959.48/1,185,062.10 = 257,356.52/x
3. Step 3: Cross multiply
   789,959.48x = 1,185,062.10 × 257,356.52
4. Step 4: Simplify right side
   789,959.48x = 304,983,458,039.89
5. Step 5: Solve for x
   x = 304,983,458,039.89/789,959.48
6. Step 6: Final answer
   x = 386,074.81