Finding the Fourth Proportional to 1,688.38, 2,329.90 and 942.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,688.38 : 2,329.90 = 942.37 : x
2. Step 2: Convert to fraction form
   1,688.38/2,329.90 = 942.37/x
3. Step 3: Cross multiply
   1,688.38x = 2,329.90 × 942.37
4. Step 4: Simplify right side
   1,688.38x = 2,195,627.86
5. Step 5: Solve for x
   x = 2,195,627.86/1,688.38
6. Step 6: Final answer
   x = 1,300.43