Finding the Fourth Proportional to 839,664.72, 1,158,749.37 and 457,691.49

Step by Step Solution

1. Step 1: Write the proportion equation
   839,664.72 : 1,158,749.37 = 457,691.49 : x
2. Step 2: Convert to fraction form
   839,664.72/1,158,749.37 = 457,691.49/x
3. Step 3: Cross multiply
   839,664.72x = 1,158,749.37 × 457,691.49
4. Step 4: Simplify right side
   839,664.72x = 530,349,725,691.86
5. Step 5: Solve for x
   x = 530,349,725,691.86/839,664.72
6. Step 6: Final answer
   x = 631,620.83