Finding the Fourth Proportional to 1,688.84, 2,330.43 and 942.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,688.84 : 2,330.43 = 942.73 : x
2. Step 2: Convert to fraction form
   1,688.84/2,330.43 = 942.73/x
3. Step 3: Cross multiply
   1,688.84x = 2,330.43 × 942.73
4. Step 4: Simplify right side
   1,688.84x = 2,196,966.27
5. Step 5: Solve for x
   x = 2,196,966.27/1,688.84
6. Step 6: Final answer
   x = 1,300.87