Finding the Fourth Proportional to 1,321.52, 1,823.70 and 790.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.52 : 1,823.70 = 790.82 : x
2. Step 2: Convert to fraction form
   1,321.52/1,823.70 = 790.82/x
3. Step 3: Cross multiply
   1,321.52x = 1,823.70 × 790.82
4. Step 4: Simplify right side
   1,321.52x = 1,442,218.43
5. Step 5: Solve for x
   x = 1,442,218.43/1,321.52
6. Step 6: Final answer
   x = 1,091.33