Finding the Fourth Proportional to 1,677.27, 2,316.83 and 1,286.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.27 : 2,316.83 = 1,286.31 : x
2. Step 2: Convert to fraction form
   1,677.27/2,316.83 = 1,286.31/x
3. Step 3: Cross multiply
   1,677.27x = 2,316.83 × 1,286.31
4. Step 4: Simplify right side
   1,677.27x = 2,980,155.17
5. Step 5: Solve for x
   x = 2,980,155.17/1,677.27
6. Step 6: Final answer
   x = 1,776.79