Finding the Fourth Proportional to 2,978,128.80, 4,467,193.20 and 848,185.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978,128.80 : 4,467,193.20 = 848,185.20 : x
2. Step 2: Convert to fraction form
   2,978,128.80/4,467,193.20 = 848,185.20/x
3. Step 3: Cross multiply
   2,978,128.80x = 4,467,193.20 × 848,185.20
4. Step 4: Simplify right side
   2,978,128.80x = 3,789,007,157,780.64
5. Step 5: Solve for x
   x = 3,789,007,157,780.64/2,978,128.80
6. Step 6: Final answer
   x = 1,272,277.80