Finding the Fourth Proportional to 848,886.50, 1,171,629.78 and 486,553.22

Step by Step Solution

1. Step 1: Write the proportion equation
   848,886.50 : 1,171,629.78 = 486,553.22 : x
2. Step 2: Convert to fraction form
   848,886.50/1,171,629.78 = 486,553.22/x
3. Step 3: Cross multiply
   848,886.50x = 1,171,629.78 × 486,553.22
4. Step 4: Simplify right side
   848,886.50x = 570,060,242,106.89
5. Step 5: Solve for x
   x = 570,060,242,106.89/848,886.50
6. Step 6: Final answer
   x = 671,538.82