Finding the Fourth Proportional to 1,419.89, 2,126.39 and 1,057.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.89 : 2,126.39 = 1,057.01 : x
2. Step 2: Convert to fraction form
   1,419.89/2,126.39 = 1,057.01/x
3. Step 3: Cross multiply
   1,419.89x = 2,126.39 × 1,057.01
4. Step 4: Simplify right side
   1,419.89x = 2,247,599.58
5. Step 5: Solve for x
   x = 2,247,599.58/1,419.89
6. Step 6: Final answer
   x = 1,582.94