Finding the Fourth Proportional to 2,284.23, 3,152.43 and 1,289.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,284.23 : 3,152.43 = 1,289.55 : x
2. Step 2: Convert to fraction form
   2,284.23/3,152.43 = 1,289.55/x
3. Step 3: Cross multiply
   2,284.23x = 3,152.43 × 1,289.55
4. Step 4: Simplify right side
   2,284.23x = 4,065,216.11
5. Step 5: Solve for x
   x = 4,065,216.11/2,284.23
6. Step 6: Final answer
   x = 1,779.69