Finding the Fourth Proportional to 1,793.72, 2,689.60 and 560.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,793.72 : 2,689.60 = 560.79 : x
2. Step 2: Convert to fraction form
   1,793.72/2,689.60 = 560.79/x
3. Step 3: Cross multiply
   1,793.72x = 2,689.60 × 560.79
4. Step 4: Simplify right side
   1,793.72x = 1,508,300.78
5. Step 5: Solve for x
   x = 1,508,300.78/1,793.72
6. Step 6: Final answer
   x = 840.88