Finding the Fourth Proportional to 2,188.20, 3,019.72 and 1,193.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.20 : 3,019.72 = 1,193.48 : x
2. Step 2: Convert to fraction form
   2,188.20/3,019.72 = 1,193.48/x
3. Step 3: Cross multiply
   2,188.20x = 3,019.72 × 1,193.48
4. Step 4: Simplify right side
   2,188.20x = 3,603,970.91
5. Step 5: Solve for x
   x = 3,603,970.91/2,188.20
6. Step 6: Final answer
   x = 1,647.00