Finding the Fourth Proportional to 789,900.86, 1,184,934.71 and 257,463.56

Step by Step Solution

1. Step 1: Write the proportion equation
   789,900.86 : 1,184,934.71 = 257,463.56 : x
2. Step 2: Convert to fraction form
   789,900.86/1,184,934.71 = 257,463.56/x
3. Step 3: Cross multiply
   789,900.86x = 1,184,934.71 × 257,463.56
4. Step 4: Simplify right side
   789,900.86x = 305,077,503,523.15
5. Step 5: Solve for x
   x = 305,077,503,523.15/789,900.86
6. Step 6: Final answer
   x = 386,222.53