Finding the Fourth Proportional to 1,665.89, 2,498.22 and 1,419.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.89 : 2,498.22 = 1,419.01 : x
2. Step 2: Convert to fraction form
   1,665.89/2,498.22 = 1,419.01/x
3. Step 3: Cross multiply
   1,665.89x = 2,498.22 × 1,419.01
4. Step 4: Simplify right side
   1,665.89x = 3,544,999.16
5. Step 5: Solve for x
   x = 3,544,999.16/1,665.89
6. Step 6: Final answer
   x = 2,127.99