Finding the Fourth Proportional to 1,872.32, 2,583 and 1,209.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.32 : 2,583 = 1,209.24 : x
2. Step 2: Convert to fraction form
   1,872.32/2,583 = 1,209.24/x
3. Step 3: Cross multiply
   1,872.32x = 2,583 × 1,209.24
4. Step 4: Simplify right side
   1,872.32x = 3,123,466.92
5. Step 5: Solve for x
   x = 3,123,466.92/1,872.32
6. Step 6: Final answer
   x = 1,668.23