Finding the Fourth Proportional to 1,669.31, 2,303.56 and 923.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.31 : 2,303.56 = 923.23 : x
2. Step 2: Convert to fraction form
   1,669.31/2,303.56 = 923.23/x
3. Step 3: Cross multiply
   1,669.31x = 2,303.56 × 923.23
4. Step 4: Simplify right side
   1,669.31x = 2,126,711.09
5. Step 5: Solve for x
   x = 2,126,711.09/1,669.31
6. Step 6: Final answer
   x = 1,274.00