Finding the Fourth Proportional to 1,411.92, 2,115.45 and 793.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.92 : 2,115.45 = 793.89 : x
2. Step 2: Convert to fraction form
   1,411.92/2,115.45 = 793.89/x
3. Step 3: Cross multiply
   1,411.92x = 2,115.45 × 793.89
4. Step 4: Simplify right side
   1,411.92x = 1,679,434.60
5. Step 5: Solve for x
   x = 1,679,434.60/1,411.92
6. Step 6: Final answer
   x = 1,189.47