Finding the Fourth Proportional to 3,162.47, 4,743.83 and 1,187.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,162.47 : 4,743.83 = 1,187.90 : x
2. Step 2: Convert to fraction form
   3,162.47/4,743.83 = 1,187.90/x
3. Step 3: Cross multiply
   3,162.47x = 4,743.83 × 1,187.90
4. Step 4: Simplify right side
   3,162.47x = 5,635,166.00
5. Step 5: Solve for x
   x = 5,635,166.00/3,162.47
6. Step 6: Final answer
   x = 1,781.89