Finding the Fourth Proportional to 704,856, 972,258.72 and 418,173.12

Step by Step Solution

1. Step 1: Write the proportion equation
   704,856 : 972,258.72 = 418,173.12 : x
2. Step 2: Convert to fraction form
   704,856/972,258.72 = 418,173.12/x
3. Step 3: Cross multiply
   704,856x = 972,258.72 × 418,173.12
4. Step 4: Simplify right side
   704,856x = 406,572,462,389.61
5. Step 5: Solve for x
   x = 406,572,462,389.61/704,856
6. Step 6: Final answer
   x = 576,816.35