Finding the Fourth Proportional to 880,530, 1,215,131.40 and 478,122

Step by Step Solution

1. Step 1: Write the proportion equation
   880,530 : 1,215,131.40 = 478,122 : x
2. Step 2: Convert to fraction form
   880,530/1,215,131.40 = 478,122/x
3. Step 3: Cross multiply
   880,530x = 1,215,131.40 × 478,122
4. Step 4: Simplify right side
   880,530x = 580,981,055,230.80
5. Step 5: Solve for x
   x = 580,981,055,230.80/880,530
6. Step 6: Final answer
   x = 659,808.36