Finding the Fourth Proportional to 1,158.38, 1,736.61 and 541.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.38 : 1,736.61 = 541.76 : x
2. Step 2: Convert to fraction form
   1,158.38/1,736.61 = 541.76/x
3. Step 3: Cross multiply
   1,158.38x = 1,736.61 × 541.76
4. Step 4: Simplify right side
   1,158.38x = 940,825.83
5. Step 5: Solve for x
   x = 940,825.83/1,158.38
6. Step 6: Final answer
   x = 812.19