Finding the Fourth Proportional to 2,436.72, 3,656.58 and 1,138.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.72 : 3,656.58 = 1,138.32 : x
2. Step 2: Convert to fraction form
   2,436.72/3,656.58 = 1,138.32/x
3. Step 3: Cross multiply
   2,436.72x = 3,656.58 × 1,138.32
4. Step 4: Simplify right side
   2,436.72x = 4,162,358.15
5. Step 5: Solve for x
   x = 4,162,358.15/2,436.72
6. Step 6: Final answer
   x = 1,708.18