Finding the Fourth Proportional to 1,816.51, 2,729.35 and 1,158.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816.51 : 2,729.35 = 1,158.69 : x
2. Step 2: Convert to fraction form
   1,816.51/2,729.35 = 1,158.69/x
3. Step 3: Cross multiply
   1,816.51x = 2,729.35 × 1,158.69
4. Step 4: Simplify right side
   1,816.51x = 3,162,470.55
5. Step 5: Solve for x
   x = 3,162,470.55/1,816.51
6. Step 6: Final answer
   x = 1,740.96