Finding the Fourth Proportional to 848,900, 1,171,648.38 and 486,566.72

Step by Step Solution

1. Step 1: Write the proportion equation
   848,900 : 1,171,648.38 = 486,566.72 : x
2. Step 2: Convert to fraction form
   848,900/1,171,648.38 = 486,566.72/x
3. Step 3: Cross multiply
   848,900x = 1,171,648.38 × 486,566.72
4. Step 4: Simplify right side
   848,900x = 570,085,109,249.91
5. Step 5: Solve for x
   x = 570,085,109,249.91/848,900
6. Step 6: Final answer
   x = 671,557.44