Finding the Fourth Proportional to 2,188.95, 3,020.86 and 1,194.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.95 : 3,020.86 = 1,194.20 : x
2. Step 2: Convert to fraction form
   2,188.95/3,020.86 = 1,194.20/x
3. Step 3: Cross multiply
   2,188.95x = 3,020.86 × 1,194.20
4. Step 4: Simplify right side
   2,188.95x = 3,607,511.01
5. Step 5: Solve for x
   x = 3,607,511.01/2,188.95
6. Step 6: Final answer
   x = 1,648.06