Finding the Fourth Proportional to 2,284.40, 3,152.75 and 1,289.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,284.40 : 3,152.75 = 1,289.72 : x
2. Step 2: Convert to fraction form
   2,284.40/3,152.75 = 1,289.72/x
3. Step 3: Cross multiply
   2,284.40x = 3,152.75 × 1,289.72
4. Step 4: Simplify right side
   2,284.40x = 4,066,142.52
5. Step 5: Solve for x
   x = 4,066,142.52/2,284.40
6. Step 6: Final answer
   x = 1,779.96