Finding the Fourth Proportional to 1,550.07, 2,138.24 and 1,019.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.07 : 2,138.24 = 1,019.05 : x
2. Step 2: Convert to fraction form
   1,550.07/2,138.24 = 1,019.05/x
3. Step 3: Cross multiply
   1,550.07x = 2,138.24 × 1,019.05
4. Step 4: Simplify right side
   1,550.07x = 2,178,970.67
5. Step 5: Solve for x
   x = 2,178,970.67/1,550.07
6. Step 6: Final answer
   x = 1,405.72