Finding the Fourth Proportional to 2,190.18, 3,022.56 and 1,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.18 : 3,022.56 = 1,258.50 : x
2. Step 2: Convert to fraction form
   2,190.18/3,022.56 = 1,258.50/x
3. Step 3: Cross multiply
   2,190.18x = 3,022.56 × 1,258.50
4. Step 4: Simplify right side
   2,190.18x = 3,803,891.76
5. Step 5: Solve for x
   x = 3,803,891.76/2,190.18
6. Step 6: Final answer
   x = 1,736.79