Finding the Fourth Proportional to 2,388.31, 3,579.88 and 1,154.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.31 : 3,579.88 = 1,154.02 : x
2. Step 2: Convert to fraction form
   2,388.31/3,579.88 = 1,154.02/x
3. Step 3: Cross multiply
   2,388.31x = 3,579.88 × 1,154.02
4. Step 4: Simplify right side
   2,388.31x = 4,131,265.10
5. Step 5: Solve for x
   x = 4,131,265.10/2,388.31
6. Step 6: Final answer
   x = 1,729.79