Finding the Fourth Proportional to 2,677.85, 4,017.31 and 947.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,677.85 : 4,017.31 = 947.69 : x
2. Step 2: Convert to fraction form
   2,677.85/4,017.31 = 947.69/x
3. Step 3: Cross multiply
   2,677.85x = 4,017.31 × 947.69
4. Step 4: Simplify right side
   2,677.85x = 3,807,144.43
5. Step 5: Solve for x
   x = 3,807,144.43/2,677.85
6. Step 6: Final answer
   x = 1,421.72