Finding the Fourth Proportional to 1,124.66, 1,553.55 and 1,019.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.66 : 1,553.55 = 1,019.87 : x
2. Step 2: Convert to fraction form
   1,124.66/1,553.55 = 1,019.87/x
3. Step 3: Cross multiply
   1,124.66x = 1,553.55 × 1,019.87
4. Step 4: Simplify right side
   1,124.66x = 1,584,410.06
5. Step 5: Solve for x
   x = 1,584,410.06/1,124.66
6. Step 6: Final answer
   x = 1,408.79