Finding the Fourth Proportional to 978,059.30, 1,464,756.15 and 478,840.10

Step by Step Solution

1. Step 1: Write the proportion equation
   978,059.30 : 1,464,756.15 = 478,840.10 : x
2. Step 2: Convert to fraction form
   978,059.30/1,464,756.15 = 478,840.10/x
3. Step 3: Cross multiply
   978,059.30x = 1,464,756.15 × 478,840.10
4. Step 4: Simplify right side
   978,059.30x = 701,383,981,341.62
5. Step 5: Solve for x
   x = 701,383,981,341.62/978,059.30
6. Step 6: Final answer
   x = 717,118.05