Finding the Fourth Proportional to 978,131.64, 1,467,202.32 and 445,279.98

Step by Step Solution

1. Step 1: Write the proportion equation
   978,131.64 : 1,467,202.32 = 445,279.98 : x
2. Step 2: Convert to fraction form
   978,131.64/1,467,202.32 = 445,279.98/x
3. Step 3: Cross multiply
   978,131.64x = 1,467,202.32 × 445,279.98
4. Step 4: Simplify right side
   978,131.64x = 653,315,819,705.55
5. Step 5: Solve for x
   x = 653,315,819,705.55/978,131.64
6. Step 6: Final answer
   x = 667,922.18