Finding the Fourth Proportional to 1,920.96, 2,651.90 and 1,258.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.96 : 2,651.90 = 1,258.83 : x
2. Step 2: Convert to fraction form
   1,920.96/2,651.90 = 1,258.83/x
3. Step 3: Cross multiply
   1,920.96x = 2,651.90 × 1,258.83
4. Step 4: Simplify right side
   1,920.96x = 3,338,284.98
5. Step 5: Solve for x
   x = 3,338,284.98/1,920.96
6. Step 6: Final answer
   x = 1,737.82