Finding the Fourth Proportional to 2,284.16, 3,428.38 and 1,189.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,284.16 : 3,428.38 = 1,189.30 : x
2. Step 2: Convert to fraction form
   2,284.16/3,428.38 = 1,189.30/x
3. Step 3: Cross multiply
   2,284.16x = 3,428.38 × 1,189.30
4. Step 4: Simplify right side
   2,284.16x = 4,077,372.33
5. Step 5: Solve for x
   x = 4,077,372.33/2,284.16
6. Step 6: Final answer
   x = 1,785.06