Finding the Fourth Proportional to 1,338.94, 2,006.17 and 948.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.94 : 2,006.17 = 948.09 : x
2. Step 2: Convert to fraction form
   1,338.94/2,006.17 = 948.09/x
3. Step 3: Cross multiply
   1,338.94x = 2,006.17 × 948.09
4. Step 4: Simplify right side
   1,338.94x = 1,902,029.72
5. Step 5: Solve for x
   x = 1,902,029.72/1,338.94
6. Step 6: Final answer
   x = 1,420.55