Finding the Fourth Proportional to 1,601.31, 2,402.55 and 676.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.31 : 2,402.55 = 676.79 : x
2. Step 2: Convert to fraction form
   1,601.31/2,402.55 = 676.79/x
3. Step 3: Cross multiply
   1,601.31x = 2,402.55 × 676.79
4. Step 4: Simplify right side
   1,601.31x = 1,626,009.80
5. Step 5: Solve for x
   x = 1,626,009.80/1,601.31
6. Step 6: Final answer
   x = 1,015.42