Finding the Fourth Proportional to 2,188.45, 3,019.95 and 1,193.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.45 : 3,019.95 = 1,193.72 : x
2. Step 2: Convert to fraction form
   2,188.45/3,019.95 = 1,193.72/x
3. Step 3: Cross multiply
   2,188.45x = 3,019.95 × 1,193.72
4. Step 4: Simplify right side
   2,188.45x = 3,604,974.71
5. Step 5: Solve for x
   x = 3,604,974.71/2,188.45
6. Step 6: Final answer
   x = 1,647.27