Finding the Fourth Proportional to 2,354.40, 3,528.72 and 1,054.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,354.40 : 3,528.72 = 1,054.08 : x
2. Step 2: Convert to fraction form
   2,354.40/3,528.72 = 1,054.08/x
3. Step 3: Cross multiply
   2,354.40x = 3,528.72 × 1,054.08
4. Step 4: Simplify right side
   2,354.40x = 3,719,553.18
5. Step 5: Solve for x
   x = 3,719,553.18/2,354.40
6. Step 6: Final answer
   x = 1,579.83