Finding the Fourth Proportional to 2,201.47, 3,038.06 and 1,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,201.47 : 3,038.06 = 1,206.72 : x
2. Step 2: Convert to fraction form
   2,201.47/3,038.06 = 1,206.72/x
3. Step 3: Cross multiply
   2,201.47x = 3,038.06 × 1,206.72
4. Step 4: Simplify right side
   2,201.47x = 3,666,090.78
5. Step 5: Solve for x
   x = 3,666,090.78/2,201.47
6. Step 6: Final answer
   x = 1,665.29