Finding the Fourth Proportional to 1,669.31, 2,303.48 and 923.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.31 : 2,303.48 = 923.15 : x
2. Step 2: Convert to fraction form
   1,669.31/2,303.48 = 923.15/x
3. Step 3: Cross multiply
   1,669.31x = 2,303.48 × 923.15
4. Step 4: Simplify right side
   1,669.31x = 2,126,457.56
5. Step 5: Solve for x
   x = 2,126,457.56/1,669.31
6. Step 6: Final answer
   x = 1,273.85