Finding the Fourth Proportional to 1,321.34, 1,823.39 and 761.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.34 : 1,823.39 = 761.82 : x
2. Step 2: Convert to fraction form
   1,321.34/1,823.39 = 761.82/x
3. Step 3: Cross multiply
   1,321.34x = 1,823.39 × 761.82
4. Step 4: Simplify right side
   1,321.34x = 1,389,094.97
5. Step 5: Solve for x
   x = 1,389,094.97/1,321.34
6. Step 6: Final answer
   x = 1,051.28