Finding the Fourth Proportional to 2,267.11, 3,128.52 and 1,258.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,267.11 : 3,128.52 = 1,258.77 : x
2. Step 2: Convert to fraction form
   2,267.11/3,128.52 = 1,258.77/x
3. Step 3: Cross multiply
   2,267.11x = 3,128.52 × 1,258.77
4. Step 4: Simplify right side
   2,267.11x = 3,938,087.12
5. Step 5: Solve for x
   x = 3,938,087.12/2,267.11
6. Step 6: Final answer
   x = 1,737.05