Finding the Fourth Proportional to 1,662.05, 2,493.81 and 931.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.05 : 2,493.81 = 931.62 : x
2. Step 2: Convert to fraction form
   1,662.05/2,493.81 = 931.62/x
3. Step 3: Cross multiply
   1,662.05x = 2,493.81 × 931.62
4. Step 4: Simplify right side
   1,662.05x = 2,323,283.27
5. Step 5: Solve for x
   x = 2,323,283.27/1,662.05
6. Step 6: Final answer
   x = 1,397.85