Finding the Fourth Proportional to 839,645.34, 1,158,710.49 and 457,674.72

Step by Step Solution

1. Step 1: Write the proportion equation
   839,645.34 : 1,158,710.49 = 457,674.72 : x
2. Step 2: Convert to fraction form
   839,645.34/1,158,710.49 = 457,674.72/x
3. Step 3: Cross multiply
   839,645.34x = 1,158,710.49 × 457,674.72
4. Step 4: Simplify right side
   839,645.34x = 530,312,499,071.81
5. Step 5: Solve for x
   x = 530,312,499,071.81/839,645.34
6. Step 6: Final answer
   x = 631,591.07