Finding the Fourth Proportional to 1,726.08, 2,381.81 and 979.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.08 : 2,381.81 = 979.89 : x
2. Step 2: Convert to fraction form
   1,726.08/2,381.81 = 979.89/x
3. Step 3: Cross multiply
   1,726.08x = 2,381.81 × 979.89
4. Step 4: Simplify right side
   1,726.08x = 2,333,911.80
5. Step 5: Solve for x
   x = 2,333,911.80/1,726.08
6. Step 6: Final answer
   x = 1,352.15