Finding the Fourth Proportional to 1,930.23, 2,664.50 and 1,222.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.23 : 2,664.50 = 1,222.43 : x
2. Step 2: Convert to fraction form
   1,930.23/2,664.50 = 1,222.43/x
3. Step 3: Cross multiply
   1,930.23x = 2,664.50 × 1,222.43
4. Step 4: Simplify right side
   1,930.23x = 3,257,145.30
5. Step 5: Solve for x
   x = 3,257,145.30/1,930.23
6. Step 6: Final answer
   x = 1,687.44