Finding the Fourth Proportional to 2,284.49, 3,152.42 and 1,289.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,284.49 : 3,152.42 = 1,289.86 : x
2. Step 2: Convert to fraction form
   2,284.49/3,152.42 = 1,289.86/x
3. Step 3: Cross multiply
   2,284.49x = 3,152.42 × 1,289.86
4. Step 4: Simplify right side
   2,284.49x = 4,066,185.07
5. Step 5: Solve for x
   x = 4,066,185.07/2,284.49
6. Step 6: Final answer
   x = 1,779.91