Finding the Fourth Proportional to 2,258.21, 3,116.36 and 1,263.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.21 : 3,116.36 = 1,263.59 : x
2. Step 2: Convert to fraction form
   2,258.21/3,116.36 = 1,263.59/x
3. Step 3: Cross multiply
   2,258.21x = 3,116.36 × 1,263.59
4. Step 4: Simplify right side
   2,258.21x = 3,937,800.60
5. Step 5: Solve for x
   x = 3,937,800.60/2,258.21
6. Step 6: Final answer
   x = 1,743.77