Finding the Fourth Proportional to 1,689.75, 2,331.83 and 943.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.75 : 2,331.83 = 943.72 : x
2. Step 2: Convert to fraction form
   1,689.75/2,331.83 = 943.72/x
3. Step 3: Cross multiply
   1,689.75x = 2,331.83 × 943.72
4. Step 4: Simplify right side
   1,689.75x = 2,200,593.74
5. Step 5: Solve for x
   x = 2,200,593.74/1,689.75
6. Step 6: Final answer
   x = 1,302.32