Finding the Fourth Proportional to 1,317.72, 1,818.60 and 793.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.72 : 1,818.60 = 793.74 : x
2. Step 2: Convert to fraction form
   1,317.72/1,818.60 = 793.74/x
3. Step 3: Cross multiply
   1,317.72x = 1,818.60 × 793.74
4. Step 4: Simplify right side
   1,317.72x = 1,443,495.56
5. Step 5: Solve for x
   x = 1,443,495.56/1,317.72
6. Step 6: Final answer
   x = 1,095.45