Finding the Fourth Proportional to 3,666.47, 5,499.79 and 1,326.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.47 : 5,499.79 = 1,326.69 : x
2. Step 2: Convert to fraction form
   3,666.47/5,499.79 = 1,326.69/x
3. Step 3: Cross multiply
   3,666.47x = 5,499.79 × 1,326.69
4. Step 4: Simplify right side
   3,666.47x = 7,296,541.17
5. Step 5: Solve for x
   x = 7,296,541.17/3,666.47
6. Step 6: Final answer
   x = 1,990.07