Finding the Fourth Proportional to 1,688.35, 2,330.04 and 942.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,688.35 : 2,330.04 = 942.49 : x
2. Step 2: Convert to fraction form
   1,688.35/2,330.04 = 942.49/x
3. Step 3: Cross multiply
   1,688.35x = 2,330.04 × 942.49
4. Step 4: Simplify right side
   1,688.35x = 2,196,039.40
5. Step 5: Solve for x
   x = 2,196,039.40/1,688.35
6. Step 6: Final answer
   x = 1,300.70