Finding the Fourth Proportional to 2,341.38, 3,513.79 and 1,108.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,341.38 : 3,513.79 = 1,108.78 : x
2. Step 2: Convert to fraction form
   2,341.38/3,513.79 = 1,108.78/x
3. Step 3: Cross multiply
   2,341.38x = 3,513.79 × 1,108.78
4. Step 4: Simplify right side
   2,341.38x = 3,896,036.02
5. Step 5: Solve for x
   x = 3,896,036.02/2,341.38
6. Step 6: Final answer
   x = 1,663.99