Finding the Fourth Proportional to 1,667.66, 2,496.86 and 841.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.66 : 2,496.86 = 841.89 : x
2. Step 2: Convert to fraction form
   1,667.66/2,496.86 = 841.89/x
3. Step 3: Cross multiply
   1,667.66x = 2,496.86 × 841.89
4. Step 4: Simplify right side
   1,667.66x = 2,102,083.57
5. Step 5: Solve for x
   x = 2,102,083.57/1,667.66
6. Step 6: Final answer
   x = 1,260.50