Finding the Fourth Proportional to 2,130.63, 3,196.23 and 669.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130.63 : 3,196.23 = 669.27 : x
2. Step 2: Convert to fraction form
   2,130.63/3,196.23 = 669.27/x
3. Step 3: Cross multiply
   2,130.63x = 3,196.23 × 669.27
4. Step 4: Simplify right side
   2,130.63x = 2,139,140.85
5. Step 5: Solve for x
   x = 2,139,140.85/2,130.63
6. Step 6: Final answer
   x = 1,003.99