Finding the Fourth Proportional to 2,519.78, 3,477.16 and 1,400.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,519.78 : 3,477.16 = 1,400.78 : x
2. Step 2: Convert to fraction form
   2,519.78/3,477.16 = 1,400.78/x
3. Step 3: Cross multiply
   2,519.78x = 3,477.16 × 1,400.78
4. Step 4: Simplify right side
   2,519.78x = 4,870,736.18
5. Step 5: Solve for x
   x = 4,870,736.18/2,519.78
6. Step 6: Final answer
   x = 1,933.00