Finding the Fourth Proportional to 3,666.98, 5,499.36 and 1,326.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.98 : 5,499.36 = 1,326.72 : x
2. Step 2: Convert to fraction form
   3,666.98/5,499.36 = 1,326.72/x
3. Step 3: Cross multiply
   3,666.98x = 5,499.36 × 1,326.72
4. Step 4: Simplify right side
   3,666.98x = 7,296,110.90
5. Step 5: Solve for x
   x = 7,296,110.90/3,666.98
6. Step 6: Final answer
   x = 1,989.68