Finding the Fourth Proportional to 2,820.78, 4,235.94 and 1,846.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.78 : 4,235.94 = 1,846.35 : x
2. Step 2: Convert to fraction form
   2,820.78/4,235.94 = 1,846.35/x
3. Step 3: Cross multiply
   2,820.78x = 4,235.94 × 1,846.35
4. Step 4: Simplify right side
   2,820.78x = 7,821,027.82
5. Step 5: Solve for x
   x = 7,821,027.82/2,820.78
6. Step 6: Final answer
   x = 2,772.65