Finding the Fourth Proportional to 1,550.32, 2,138.54 and 1,019.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.32 : 2,138.54 = 1,019.30 : x
2. Step 2: Convert to fraction form
   1,550.32/2,138.54 = 1,019.30/x
3. Step 3: Cross multiply
   1,550.32x = 2,138.54 × 1,019.30
4. Step 4: Simplify right side
   1,550.32x = 2,179,811.02
5. Step 5: Solve for x
   x = 2,179,811.02/1,550.32
6. Step 6: Final answer
   x = 1,406.04