Finding the Fourth Proportional to 2,284.76, 3,152.64 and 1,289.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,284.76 : 3,152.64 = 1,289.90 : x
2. Step 2: Convert to fraction form
   2,284.76/3,152.64 = 1,289.90/x
3. Step 3: Cross multiply
   2,284.76x = 3,152.64 × 1,289.90
4. Step 4: Simplify right side
   2,284.76x = 4,066,590.34
5. Step 5: Solve for x
   x = 4,066,590.34/2,284.76
6. Step 6: Final answer
   x = 1,779.88