Finding the Fourth Proportional to 1,821.32, 2,513.41 and 993.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.32 : 2,513.41 = 993.32 : x
2. Step 2: Convert to fraction form
   1,821.32/2,513.41 = 993.32/x
3. Step 3: Cross multiply
   1,821.32x = 2,513.41 × 993.32
4. Step 4: Simplify right side
   1,821.32x = 2,496,607.85
5. Step 5: Solve for x
   x = 2,496,607.85/1,821.32
6. Step 6: Final answer
   x = 1,370.77