Finding the Fourth Proportional to 2,188.89, 3,020.72 and 1,194.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.89 : 3,020.72 = 1,194.21 : x
2. Step 2: Convert to fraction form
   2,188.89/3,020.72 = 1,194.21/x
3. Step 3: Cross multiply
   2,188.89x = 3,020.72 × 1,194.21
4. Step 4: Simplify right side
   2,188.89x = 3,607,368.06
5. Step 5: Solve for x
   x = 3,607,368.06/2,188.89
6. Step 6: Final answer
   x = 1,648.04