Finding the Fourth Proportional to 2,012.35, 3,017.78 and 695.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.35 : 3,017.78 = 695.77 : x
2. Step 2: Convert to fraction form
   2,012.35/3,017.78 = 695.77/x
3. Step 3: Cross multiply
   2,012.35x = 3,017.78 × 695.77
4. Step 4: Simplify right side
   2,012.35x = 2,099,680.79
5. Step 5: Solve for x
   x = 2,099,680.79/2,012.35
6. Step 6: Final answer
   x = 1,043.40