Finding the Fourth Proportional to 2,188.81, 3,020.56 and 1,194.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.81 : 3,020.56 = 1,194.09 : x
2. Step 2: Convert to fraction form
   2,188.81/3,020.56 = 1,194.09/x
3. Step 3: Cross multiply
   2,188.81x = 3,020.56 × 1,194.09
4. Step 4: Simplify right side
   2,188.81x = 3,606,823.17
5. Step 5: Solve for x
   x = 3,606,823.17/2,188.81
6. Step 6: Final answer
   x = 1,647.85