Finding the Fourth Proportional to 716,667.82, 988,980.64 and 394,377.73

Step by Step Solution

1. Step 1: Write the proportion equation
   716,667.82 : 988,980.64 = 394,377.73 : x
2. Step 2: Convert to fraction form
   716,667.82/988,980.64 = 394,377.73/x
3. Step 3: Cross multiply
   716,667.82x = 988,980.64 × 394,377.73
4. Step 4: Simplify right side
   716,667.82x = 390,031,939,817.15
5. Step 5: Solve for x
   x = 390,031,939,817.15/716,667.82
6. Step 6: Final answer
   x = 544,229.74