Finding the Fourth Proportional to 1,338.10, 1,845.38 and 946.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.10 : 1,845.38 = 946.86 : x
2. Step 2: Convert to fraction form
   1,338.10/1,845.38 = 946.86/x
3. Step 3: Cross multiply
   1,338.10x = 1,845.38 × 946.86
4. Step 4: Simplify right side
   1,338.10x = 1,747,316.51
5. Step 5: Solve for x
   x = 1,747,316.51/1,338.10
6. Step 6: Final answer
   x = 1,305.82