Finding the Fourth Proportional to 2,654.09, 3,979.65 and 1,192.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.09 : 3,979.65 = 1,192.31 : x
2. Step 2: Convert to fraction form
   2,654.09/3,979.65 = 1,192.31/x
3. Step 3: Cross multiply
   2,654.09x = 3,979.65 × 1,192.31
4. Step 4: Simplify right side
   2,654.09x = 4,744,976.49
5. Step 5: Solve for x
   x = 4,744,976.49/2,654.09
6. Step 6: Final answer
   x = 1,787.80