Finding the Fourth Proportional to 2,776.80, 4,146.56 and 2,412.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.80 : 4,146.56 = 2,412.48 : x
2. Step 2: Convert to fraction form
   2,776.80/4,146.56 = 2,412.48/x
3. Step 3: Cross multiply
   2,776.80x = 4,146.56 × 2,412.48
4. Step 4: Simplify right side
   2,776.80x = 10,003,493.07
5. Step 5: Solve for x
   x = 10,003,493.07/2,776.80
6. Step 6: Final answer
   x = 3,602.53