Finding the Fourth Proportional to 3,667.72, 5,500.43 and 1,201.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.72 : 5,500.43 = 1,201.99 : x
2. Step 2: Convert to fraction form
   3,667.72/5,500.43 = 1,201.99/x
3. Step 3: Cross multiply
   3,667.72x = 5,500.43 × 1,201.99
4. Step 4: Simplify right side
   3,667.72x = 6,611,461.86
5. Step 5: Solve for x
   x = 6,611,461.86/3,667.72
6. Step 6: Final answer
   x = 1,802.61