Finding the Fourth Proportional to 3,116.47, 4,299.98 and 1,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,116.47 : 4,299.98 = 1,856.72 : x
2. Step 2: Convert to fraction form
   3,116.47/4,299.98 = 1,856.72/x
3. Step 3: Cross multiply
   3,116.47x = 4,299.98 × 1,856.72
4. Step 4: Simplify right side
   3,116.47x = 7,983,858.87
5. Step 5: Solve for x
   x = 7,983,858.87/3,116.47
6. Step 6: Final answer
   x = 2,561.83