Finding the Fourth Proportional to 1,114.45, 1,671.31 and 383.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.45 : 1,671.31 = 383.83 : x
2. Step 2: Convert to fraction form
   1,114.45/1,671.31 = 383.83/x
3. Step 3: Cross multiply
   1,114.45x = 1,671.31 × 383.83
4. Step 4: Simplify right side
   1,114.45x = 641,498.92
5. Step 5: Solve for x
   x = 641,498.92/1,114.45
6. Step 6: Final answer
   x = 575.62