Finding the Fourth Proportional to 978,129, 1,467,324.72 and 417,294.72

Step by Step Solution

1. Step 1: Write the proportion equation
   978,129 : 1,467,324.72 = 417,294.72 : x
2. Step 2: Convert to fraction form
   978,129/1,467,324.72 = 417,294.72/x
3. Step 3: Cross multiply
   978,129x = 1,467,324.72 × 417,294.72
4. Step 4: Simplify right side
   978,129x = 612,306,858,181.48
5. Step 5: Solve for x
   x = 612,306,858,181.48/978,129
6. Step 6: Final answer
   x = 625,998.06