Finding the Fourth Proportional to 1,665.99, 2,499.14 and 433.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.99 : 2,499.14 = 433.42 : x
2. Step 2: Convert to fraction form
   1,665.99/2,499.14 = 433.42/x
3. Step 3: Cross multiply
   1,665.99x = 2,499.14 × 433.42
4. Step 4: Simplify right side
   1,665.99x = 1,083,172.09
5. Step 5: Solve for x
   x = 1,083,172.09/1,665.99
6. Step 6: Final answer
   x = 650.17