Finding the Fourth Proportional to 2,628.57, 3,941.77 and 1,069.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.57 : 3,941.77 = 1,069.35 : x
2. Step 2: Convert to fraction form
   2,628.57/3,941.77 = 1,069.35/x
3. Step 3: Cross multiply
   2,628.57x = 3,941.77 × 1,069.35
4. Step 4: Simplify right side
   2,628.57x = 4,215,131.75
5. Step 5: Solve for x
   x = 4,215,131.75/2,628.57
6. Step 6: Final answer
   x = 1,603.58