Finding the Fourth Proportional to 906,066.16, 1,250,386.72 and 498,184.72

Step by Step Solution

1. Step 1: Write the proportion equation
   906,066.16 : 1,250,386.72 = 498,184.72 : x
2. Step 2: Convert to fraction form
   906,066.16/1,250,386.72 = 498,184.72/x
3. Step 3: Cross multiply
   906,066.16x = 1,250,386.72 × 498,184.72
4. Step 4: Simplify right side
   906,066.16x = 622,923,557,994.92
5. Step 5: Solve for x
   x = 622,923,557,994.92/906,066.16
6. Step 6: Final answer
   x = 687,503.39