Finding the Fourth Proportional to 2,188.68, 3,020.42 and 1,193.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.68 : 3,020.42 = 1,193.88 : x
2. Step 2: Convert to fraction form
   2,188.68/3,020.42 = 1,193.88/x
3. Step 3: Cross multiply
   2,188.68x = 3,020.42 × 1,193.88
4. Step 4: Simplify right side
   2,188.68x = 3,606,019.03
5. Step 5: Solve for x
   x = 3,606,019.03/2,188.68
6. Step 6: Final answer
   x = 1,647.58