Finding the Fourth Proportional to 1,726.05, 2,381.80 and 979.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.05 : 2,381.80 = 979.84 : x
2. Step 2: Convert to fraction form
   1,726.05/2,381.80 = 979.84/x
3. Step 3: Cross multiply
   1,726.05x = 2,381.80 × 979.84
4. Step 4: Simplify right side
   1,726.05x = 2,333,782.91
5. Step 5: Solve for x
   x = 2,333,782.91/1,726.05
6. Step 6: Final answer
   x = 1,352.09