Finding the Fourth Proportional to 2,686.05, 4,027.86 and 954.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.05 : 4,027.86 = 954.72 : x
2. Step 2: Convert to fraction form
   2,686.05/4,027.86 = 954.72/x
3. Step 3: Cross multiply
   2,686.05x = 4,027.86 × 954.72
4. Step 4: Simplify right side
   2,686.05x = 3,845,478.50
5. Step 5: Solve for x
   x = 3,845,478.50/2,686.05
6. Step 6: Final answer
   x = 1,431.65