Finding the Fourth Proportional to 2,656.50, 3,986.37 and 1,117.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.50 : 3,986.37 = 1,117.50 : x
2. Step 2: Convert to fraction form
   2,656.50/3,986.37 = 1,117.50/x
3. Step 3: Cross multiply
   2,656.50x = 3,986.37 × 1,117.50
4. Step 4: Simplify right side
   2,656.50x = 4,454,768.48
5. Step 5: Solve for x
   x = 4,454,768.48/2,656.50
6. Step 6: Final answer
   x = 1,676.93