Finding the Fourth Proportional to 1,667.38, 2,502.79 and 1,229.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.38 : 2,502.79 = 1,229.12 : x
2. Step 2: Convert to fraction form
   1,667.38/2,502.79 = 1,229.12/x
3. Step 3: Cross multiply
   1,667.38x = 2,502.79 × 1,229.12
4. Step 4: Simplify right side
   1,667.38x = 3,076,213.66
5. Step 5: Solve for x
   x = 3,076,213.66/1,667.38
6. Step 6: Final answer
   x = 1,844.94