Finding the Fourth Proportional to 4,878.50, 7,317.86 and 1,758.76

Step by Step Solution

1. Step 1: Write the proportion equation
   4,878.50 : 7,317.86 = 1,758.76 : x
2. Step 2: Convert to fraction form
   4,878.50/7,317.86 = 1,758.76/x
3. Step 3: Cross multiply
   4,878.50x = 7,317.86 × 1,758.76
4. Step 4: Simplify right side
   4,878.50x = 12,870,359.45
5. Step 5: Solve for x
   x = 12,870,359.45/4,878.50
6. Step 6: Final answer
   x = 2,638.18