Finding the Fourth Proportional to 2,188.95, 3,021.56 and 1,349.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.95 : 3,021.56 = 1,349.79 : x
2. Step 2: Convert to fraction form
   2,188.95/3,021.56 = 1,349.79/x
3. Step 3: Cross multiply
   2,188.95x = 3,021.56 × 1,349.79
4. Step 4: Simplify right side
   2,188.95x = 4,078,464.72
5. Step 5: Solve for x
   x = 4,078,464.72/2,188.95
6. Step 6: Final answer
   x = 1,863.21