Finding the Fourth Proportional to 1,665.24, 2,507.64 and 1,451.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.24 : 2,507.64 = 1,451.40 : x
2. Step 2: Convert to fraction form
   1,665.24/2,507.64 = 1,451.40/x
3. Step 3: Cross multiply
   1,665.24x = 2,507.64 × 1,451.40
4. Step 4: Simplify right side
   1,665.24x = 3,639,588.70
5. Step 5: Solve for x
   x = 3,639,588.70/1,665.24
6. Step 6: Final answer
   x = 2,185.62