Finding the Fourth Proportional to 1,726.89, 2,383.12 and 980.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.89 : 2,383.12 = 980.86 : x
2. Step 2: Convert to fraction form
   1,726.89/2,383.12 = 980.86/x
3. Step 3: Cross multiply
   1,726.89x = 2,383.12 × 980.86
4. Step 4: Simplify right side
   1,726.89x = 2,337,502.35
5. Step 5: Solve for x
   x = 2,337,502.35/1,726.89
6. Step 6: Final answer
   x = 1,353.59