Finding the Fourth Proportional to 1,608.74, 2,219.91 and 1,019.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.74 : 2,219.91 = 1,019.06 : x
2. Step 2: Convert to fraction form
   1,608.74/2,219.91 = 1,019.06/x
3. Step 3: Cross multiply
   1,608.74x = 2,219.91 × 1,019.06
4. Step 4: Simplify right side
   1,608.74x = 2,262,221.48
5. Step 5: Solve for x
   x = 2,262,221.48/1,608.74
6. Step 6: Final answer
   x = 1,406.21