Finding the Fourth Proportional to 3,145.82, 4,720.86 and 1,197.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,145.82 : 4,720.86 = 1,197.98 : x
2. Step 2: Convert to fraction form
   3,145.82/4,720.86 = 1,197.98/x
3. Step 3: Cross multiply
   3,145.82x = 4,720.86 × 1,197.98
4. Step 4: Simplify right side
   3,145.82x = 5,655,466.27
5. Step 5: Solve for x
   x = 5,655,466.27/3,145.82
6. Step 6: Final answer
   x = 1,797.77