Finding the Fourth Proportional to 2,188.96, 3,020.72 and 1,194.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.96 : 3,020.72 = 1,194.21 : x
2. Step 2: Convert to fraction form
   2,188.96/3,020.72 = 1,194.21/x
3. Step 3: Cross multiply
   2,188.96x = 3,020.72 × 1,194.21
4. Step 4: Simplify right side
   2,188.96x = 3,607,363.49
5. Step 5: Solve for x
   x = 3,607,363.49/2,188.96
6. Step 6: Final answer
   x = 1,647.98