Finding the Fourth Proportional to 3,677.83, 5,515.56 and 1,212.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,677.83 : 5,515.56 = 1,212.12 : x
2. Step 2: Convert to fraction form
   3,677.83/5,515.56 = 1,212.12/x
3. Step 3: Cross multiply
   3,677.83x = 5,515.56 × 1,212.12
4. Step 4: Simplify right side
   3,677.83x = 6,685,520.59
5. Step 5: Solve for x
   x = 6,685,520.59/3,677.83
6. Step 6: Final answer
   x = 1,817.79