Finding the Fourth Proportional to 2,031.22, 2,801.64 and 1,284.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.22 : 2,801.64 = 1,284.48 : x
2. Step 2: Convert to fraction form
   2,031.22/2,801.64 = 1,284.48/x
3. Step 3: Cross multiply
   2,031.22x = 2,801.64 × 1,284.48
4. Step 4: Simplify right side
   2,031.22x = 3,598,650.55
5. Step 5: Solve for x
   x = 3,598,650.55/2,031.22
6. Step 6: Final answer
   x = 1,771.67