Finding the Fourth Proportional to 2,799.78, 4,197.62 and 1,412.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,799.78 : 4,197.62 = 1,412.48 : x
2. Step 2: Convert to fraction form
   2,799.78/4,197.62 = 1,412.48/x
3. Step 3: Cross multiply
   2,799.78x = 4,197.62 × 1,412.48
4. Step 4: Simplify right side
   2,799.78x = 5,929,054.30
5. Step 5: Solve for x
   x = 5,929,054.30/2,799.78
6. Step 6: Final answer
   x = 2,117.69