Finding the Fourth Proportional to 1,667.48, 2,490.82 and 1,235.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.48 : 2,490.82 = 1,235.48 : x
2. Step 2: Convert to fraction form
   1,667.48/2,490.82 = 1,235.48/x
3. Step 3: Cross multiply
   1,667.48x = 2,490.82 × 1,235.48
4. Step 4: Simplify right side
   1,667.48x = 3,077,358.29
5. Step 5: Solve for x
   x = 3,077,358.29/1,667.48
6. Step 6: Final answer
   x = 1,845.51