Finding the Fourth Proportional to 1,665.38, 2,495.91 and 1,225.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.38 : 2,495.91 = 1,225.46 : x
2. Step 2: Convert to fraction form
   1,665.38/2,495.91 = 1,225.46/x
3. Step 3: Cross multiply
   1,665.38x = 2,495.91 × 1,225.46
4. Step 4: Simplify right side
   1,665.38x = 3,058,637.87
5. Step 5: Solve for x
   x = 3,058,637.87/1,665.38
6. Step 6: Final answer
   x = 1,836.60