Finding the Fourth Proportional to 3,185.96, 4,777.72 and 1,237.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,185.96 : 4,777.72 = 1,237.91 : x
2. Step 2: Convert to fraction form
   3,185.96/4,777.72 = 1,237.91/x
3. Step 3: Cross multiply
   3,185.96x = 4,777.72 × 1,237.91
4. Step 4: Simplify right side
   3,185.96x = 5,914,360.38
5. Step 5: Solve for x
   x = 5,914,360.38/3,185.96
6. Step 6: Final answer
   x = 1,856.39