Finding the Fourth Proportional to 1,438.05, 1,983.78 and 848.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438.05 : 1,983.78 = 848.01 : x
2. Step 2: Convert to fraction form
   1,438.05/1,983.78 = 848.01/x
3. Step 3: Cross multiply
   1,438.05x = 1,983.78 × 848.01
4. Step 4: Simplify right side
   1,438.05x = 1,682,265.28
5. Step 5: Solve for x
   x = 1,682,265.28/1,438.05
6. Step 6: Final answer
   x = 1,169.82