Finding the Fourth Proportional to 3,859.40, 5,788.56 and 1,262

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859.40 : 5,788.56 = 1,262 : x
2. Step 2: Convert to fraction form
   3,859.40/5,788.56 = 1,262/x
3. Step 3: Cross multiply
   3,859.40x = 5,788.56 × 1,262
4. Step 4: Simplify right side
   3,859.40x = 7,305,162.72
5. Step 5: Solve for x
   x = 7,305,162.72/3,859.40
6. Step 6: Final answer
   x = 1,892.82