Finding the Fourth Proportional to 978,114.72, 1,467,177.20 and 445,263.12

Step by Step Solution

1. Step 1: Write the proportion equation
   978,114.72 : 1,467,177.20 = 445,263.12 : x
2. Step 2: Convert to fraction form
   978,114.72/1,467,177.20 = 445,263.12/x
3. Step 3: Cross multiply
   978,114.72x = 1,467,177.20 × 445,263.12
4. Step 4: Simplify right side
   978,114.72x = 653,279,897,664.86
5. Step 5: Solve for x
   x = 653,279,897,664.86/978,114.72
6. Step 6: Final answer
   x = 667,897.01