Finding the Fourth Proportional to 1,407.82, 1,942.64 and 848.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.82 : 1,942.64 = 848.38 : x
2. Step 2: Convert to fraction form
   1,407.82/1,942.64 = 848.38/x
3. Step 3: Cross multiply
   1,407.82x = 1,942.64 × 848.38
4. Step 4: Simplify right side
   1,407.82x = 1,648,096.92
5. Step 5: Solve for x
   x = 1,648,096.92/1,407.82
6. Step 6: Final answer
   x = 1,170.67