Finding the Fourth Proportional to 2,518.54, 3,776.98 and 874.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.54 : 3,776.98 = 874.72 : x
2. Step 2: Convert to fraction form
   2,518.54/3,776.98 = 874.72/x
3. Step 3: Cross multiply
   2,518.54x = 3,776.98 × 874.72
4. Step 4: Simplify right side
   2,518.54x = 3,303,814.74
5. Step 5: Solve for x
   x = 3,303,814.74/2,518.54
6. Step 6: Final answer
   x = 1,311.80