Finding the Fourth Proportional to 2,543.32, 3,812.67 and 1,155.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.32 : 3,812.67 = 1,155.91 : x
2. Step 2: Convert to fraction form
   2,543.32/3,812.67 = 1,155.91/x
3. Step 3: Cross multiply
   2,543.32x = 3,812.67 × 1,155.91
4. Step 4: Simplify right side
   2,543.32x = 4,407,103.38
5. Step 5: Solve for x
   x = 4,407,103.38/2,543.32
6. Step 6: Final answer
   x = 1,732.82