Finding the Fourth Proportional to 1,321.94, 1,983.34 and 591.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.94 : 1,983.34 = 591.38 : x
2. Step 2: Convert to fraction form
   1,321.94/1,983.34 = 591.38/x
3. Step 3: Cross multiply
   1,321.94x = 1,983.34 × 591.38
4. Step 4: Simplify right side
   1,321.94x = 1,172,907.61
5. Step 5: Solve for x
   x = 1,172,907.61/1,321.94
6. Step 6: Final answer
   x = 887.26