Finding the Fourth Proportional to 2,886.72, 4,330.62 and 1,155.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.72 : 4,330.62 = 1,155.48 : x
2. Step 2: Convert to fraction form
   2,886.72/4,330.62 = 1,155.48/x
3. Step 3: Cross multiply
   2,886.72x = 4,330.62 × 1,155.48
4. Step 4: Simplify right side
   2,886.72x = 5,003,944.80
5. Step 5: Solve for x
   x = 5,003,944.80/2,886.72
6. Step 6: Final answer
   x = 1,733.44